States /

Reported sewage discharges in Michigan

Updated Nov 4, 2026, 8:25 PM EST. We track 480 waters in Michigan: 5 with a sewage discharge status, 28 with caution after a discharge, and 2 with no confirmed discharge end. 445 have no current status on their water outline. 60 discharge records dated within the last 30 days.

The law and practice: Michigan law sets no period after a sewage discharge during which the water is to be avoided: whoever is responsible for a sewer system that discharges untreated or partially treated sewage must notify the Department of Environment, Great Lakes, and Energy (EGLE), the local health departments and a daily newspaper immediately and within 24 hours of the discharge's start, report its volume, receiving waters and times when it ends, and test the affected waters for E. coli (MCL 324.3112a). The rule this site applies, with its source

Source: DirtyWaterWatch statuses from the sources checked automatically, listed below. Updated 2026-11-05 01:25 UTC.

Data and its limits

Dated reports Michigan publishes dated overflow reports; the newest is from Nov 3, 2026.

What the law requires. Under MCL 324.3112a, whoever is responsible for a sewer system that discharges untreated or partially treated sewage must notify the Department of Environment, Great Lakes, and Energy (EGLE), the local health departments and a daily newspaper immediately, and within 24 hours of its start, report its volume, cause, waters and times when it ends, and test the affected waters for E. coli. EGLE must promptly post each notification online. Each year operators must also ask the municipalities downstream whether they wish to be notified of discharges; those that do are notified the same way (MCL 324.3112a(4)). Combined sewer operators, all in the Great Lakes basin, must also post signs at their outfalls in public areas, notify the public and the local health departments within four hours of learning of a discharge, update the notice within seven days after it ends, and publish a yearly notice of the year's discharges (40 CFR 122.38). No period after a discharge is set during which the water should be avoided.

What is published. EGLE's MiEnviro list carries every report back to 2001, and this site shows its sewage reports from 2001 on: combined sewer overflows (sewage and rainwater from a shared pipe), sanitary (sewage-only) overflows, retention treatment basin discharges (combined sewage settled and disinfected before it overflows) and others, with the operator, permit, start and end to the minute and, once completed, the volume and receiving water. Reports appear a median of about 15 hours after a discharge began; more than a third take over 24 hours.

What is not published. A map point: reports are placed by permit and outfall number, or by the water named. A report in process often names no water (144 of the 332 in process on November 4, 2026) and no volume. The newspaper notices, health department notices and E. coli results.

Known problems in the data. A report in process repeats its start as its end, and some completed reports keep it: the same minute for the start and end of a discharge of millions of gallons. Some reports stay in process for years, and permit numbers are typed in many forms.

What this site does about it. A report in process is shown as ongoing for seven days, then hatched "End not confirmed" until 30 days after it began. A completed report whose end repeats its start is read as end not confirmed: caution for 14 days, then hatched to day 30. Other completed reports get this site's caution after their end (72 hours; 96 on lakes, ponds and reservoirs), since the law sets none. Retention basin discharges are shown as combined sewer overflows of partially treated sewage. On the Great Lakes and Lake St. Clair a discharge colours a modeled stretch of shore water at the outfall, never the whole lake. Narratives, which can name residents, are not reproduced.

As of November 4, 2026, of the 1,019 registered treatment-plant and sewer outfalls in Michigan (closed outfalls aside), 914 (90 percent) are tied to a water record on this site and 105 (10 percent) are not yet; an overflow at one of those appears on the map at its point with no water coloured.

Of this state's reports on this site, 100 percent are dated to the day or better; the newest dated report is from Nov 3, 2026. Coverage: Dated reports.

What stands in the way

The law's public channel is a printed newspaper notice. Michigan's BeachGuard map shows a colour per beach, but the advisories behind it need an account, and a colour without dates or a reason cannot be cited, so this site does not read it. The state's algal bloom map is not read either: no data service behind it that can be cited has been identified.

100 percent of the sewer operators here have each overflow posted on the web, by the operator or the state (565 of 565).

Notice channels that do not reach the public on the web, by reason (a sewer operator can have several):

No web page1,131
Print only565
Not verified60
Blocks automated reading3
Login required1

The operators or agencies behind these counts are not listed yet.

Public-notice channels

1,765 channels: 3 monitored, 0 publishing a status now

Where operators and agencies in this state tell the public about sewage discharges: pages, lists and feeds required by law or by a permit, and those kept voluntarily. We read the ones we can and say what we find; a channel we do not read says why.

This list needs JavaScript.

Required by law: public-notice channels in this state and what our monitor finds on each
Operator or agency	Channel	What we find
Acacia Park CSO Drainage District (OAKLAND CO-ACACIA PARK CSO RTB)	Health department page	Testing results not read
Acacia Park CSO Drainage District (OAKLAND CO-ACACIA PARK CSO RTB)	Health department page	Health department notice not read
Acacia Park CSO Drainage District (OAKLAND CO-ACACIA PARK CSO RTB)	News page	Printed notice not read
Ada Township	Health department page	Testing results not read
Ada Township	Health department page	Health department notice not read
Ada Township	News page	Printed notice not read
Adams Township	Health department page	Testing results not read
Adams Township	Health department page	Health department notice not read
Adams Township	News page	Printed notice not read
AEI Roaring Fork LLC	Health department page	Testing results not read
AEI Roaring Fork LLC	Health department page	Health department notice not read
AEI Roaring Fork LLC	News page	Printed notice not read
AEW	Health department page	Testing results not read
AEW	Health department page	Health department notice not read
AEW	News page	Printed notice not read
Akron-Fairgrove Board of Operations	Health department page	Testing results not read
Akron-Fairgrove Board of Operations	Health department page	Health department notice not read
Akron-Fairgrove Board of Operations	News page	Printed notice not read
Algoma Associates, LLC	Health department page	Testing results not read
Algoma Associates, LLC	Health department page	Health department notice not read
Algoma Associates, LLC	News page	Printed notice not read
Allendale Charter Township	Health department page	Testing results not read
Allendale Charter Township	Health department page	Health department notice not read
Allendale Charter Township	News page	Printed notice not read
Alpena Charter Township	Health department page	Testing results not read
Alpena Charter Township	Health department page	Health department notice not read
Alpena Charter Township	News page	Printed notice not read
Amboy Township	Health department page	Testing results not read
Amboy Township	Health department page	Health department notice not read
Amboy Township	News page	Printed notice not read
Anchor Bay School District	Health department page	Testing results not read
Anchor Bay School District	Health department page	Health department notice not read
Anchor Bay School District	News page	Printed notice not read
Apple-Carr Village Mobile Home Park LLC	Health department page	Testing results not read
Apple-Carr Village Mobile Home Park LLC	Health department page	Health department notice not read
Apple-Carr Village Mobile Home Park LLC	News page	Printed notice not read
B&B Water\Wastewater consultants inc	Health department page	Testing results not read
B&B Water\Wastewater consultants inc	Health department page	Health department notice not read
B&B Water\Wastewater consultants inc	News page	Printed notice not read
BANGOR WWSL	Health department page	Testing results not read
BANGOR WWSL	Health department page	Health department notice not read
BANGOR WWSL	News page	Printed notice not read
BASF Corporation	Health department page	Testing results not read
BASF Corporation	Health department page	Health department notice not read
BASF Corporation	News page	Printed notice not read
Bath Charter Township	Health department page	Testing results not read
Bath Charter Township	Health department page	Health department notice not read
Bath Charter Township	News page	Printed notice not read
Bay County Department of Water and Sewer	Health department page	Testing results not read
Bay County Department of Water and Sewer	Health department page	Health department notice not read
Bay County Department of Water and Sewer	News page	Printed notice not read
BELLEVILLE CSO	Health department page	Testing results not read
BELLEVILLE CSO	Health department page	Health department notice not read
BELLEVILLE CSO	News page	Printed notice not read
Benton Harbor-St. Joseph Joint Board of Commissioners	Health department page	Testing results not read
Benton Harbor-St. Joseph Joint Board of Commissioners	Health department page	Health department notice not read
Benton Harbor-St. Joseph Joint Board of Commissioners	News page	Printed notice not read
Bergland Township	Health department page	Testing results not read
Bergland Township	Health department page	Health department notice not read
Bergland Township	News page	Printed notice not read
Berlin Charter Township	Health department page	Testing results not read
Berlin Charter Township	Health department page	Health department notice not read
Berlin Charter Township	News page	Printed notice not read
Bessemer Area Sewer Authority	Health department page	Testing results not read
Bessemer Area Sewer Authority	Health department page	Health department notice not read
Bessemer Area Sewer Authority	News page	Printed notice not read
Bessemer Township	Health department page	Testing results not read
Bessemer Township	Health department page	Health department notice not read
Bessemer Township	News page	Printed notice not read
Betsie Lake Utilities Authority	Health department page	Testing results not read
Betsie Lake Utilities Authority	Health department page	Health department notice not read
Betsie Lake Utilities Authority	News page	Printed notice not read
Billings Township	Health department page	Testing results not read
Billings Township	Health department page	Health department notice not read
Billings Township	News page	Printed notice not read
Black Bear Farms Co-Owners' Association, Inc.	Health department page	Testing results not read
Black Bear Farms Co-Owners' Association, Inc.	Health department page	Health department notice not read
Black Bear Farms Co-Owners' Association, Inc.	News page	Printed notice not read
Blackman Charter Township	Health department page	Testing results not read
Blackman Charter Township	Health department page	Health department notice not read
Blackman Charter Township	News page	Printed notice not read
Bloomfield Village CSO Drainage District (BLOOMFIELD VILLAGE CSO RTB)	Health department page	Testing results not read
Bloomfield Village CSO Drainage District (BLOOMFIELD VILLAGE CSO RTB)	Health department page	Health department notice not read
Bloomfield Village CSO Drainage District (BLOOMFIELD VILLAGE CSO RTB)	News page	Printed notice not read
Bowne Township	Health department page	Testing results not read
Bowne Township	Health department page	Health department notice not read
Bowne Township	News page	Printed notice not read
Branch County Board of Public Utilities	Health department page	Testing results not read
Branch County Board of Public Utilities	Health department page	Health department notice not read
Branch County Board of Public Utilities	News page	Printed notice not read
Brevort Township	Health department page	Testing results not read
Brevort Township	Health department page	Health department notice not read
Brevort Township	News page	Printed notice not read
Bridgeport Charter Township	Health department page	Testing results not read
Bridgeport Charter Township	Health department page	Health department notice not read
Bridgeport Charter Township	News page	Printed notice not read
Bridgewater Township	Health department page	Testing results not read
Bridgewater Township	Health department page	Health department notice not read
Bridgewater Township	News page	Printed notice not read
Brighton Township	Health department page	Testing results not read
Brighton Township	Health department page	Health department notice not read
Brighton Township	News page	Printed notice not read
Brookfield Township	Health department page	Testing results not read
Brookfield Township	Health department page	Health department notice not read
Brookfield Township	News page	Printed notice not read
Broomfield Valley Mobile Home Park	Health department page	Testing results not read
Broomfield Valley Mobile Home Park	Health department page	Health department notice not read
Broomfield Valley Mobile Home Park	News page	Printed notice not read
BRUCE SCHOOL	Health department page	Testing results not read
BRUCE SCHOOL	Health department page	Health department notice not read
BRUCE SCHOOL	News page	Printed notice not read
Buchanan WWTP	Health department page	Testing results not read
Buchanan WWTP	Health department page	Health department notice not read
Buchanan WWTP	News page	Printed notice not read
Buena Vista Charter Township	Health department page	Testing results not read
Buena Vista Charter Township	Health department page	Health department notice not read
Buena Vista Charter Township	News page	Printed notice not read
Bullock Creek School District	Health department page	Testing results not read
Bullock Creek School District	Health department page	Health department notice not read
Bullock Creek School District	News page	Printed notice not read
Butman Township	Health department page	Testing results not read
Butman Township	Health department page	Health department notice not read
Butman Township	News page	Printed notice not read
CAPAC WWSL	Health department page	Testing results not read
CAPAC WWSL	Health department page	Health department notice not read
CAPAC WWSL	News page	Printed notice not read
Carlton Township	Health department page	Testing results not read
Carlton Township	Health department page	Health department notice not read
Carlton Township	News page	Printed notice not read
Carp Lake Township	Health department page	Testing results not read
Carp Lake Township	Health department page	Health department notice not read
Carp Lake Township	News page	Printed notice not read
Cass County Board of Public Works	Health department page	Testing results not read
Cass County Board of Public Works	Health department page	Health department notice not read
Cass County Board of Public Works	News page	Printed notice not read
Chain of Lakes Sewer Authority	Health department page	Testing results not read
Chain of Lakes Sewer Authority	Health department page	Health department notice not read
Chain of Lakes Sewer Authority	News page	Printed notice not read
Charter Township of Clinton - Department of Public Services	Health department page	Testing results not read
Charter Township of Clinton - Department of Public Services	Health department page	Health department notice not read
Charter Township of Clinton - Department of Public Services	News page	Printed notice not read
Charter Township of Commerce	Health department page	Testing results not read
Charter Township of Commerce	Health department page	Health department notice not read
Charter Township of Commerce	News page	Printed notice not read
Charter Township of Garfield	Health department page	Testing results not read
Charter Township of Garfield	Health department page	Health department notice not read
Charter Township of Garfield	News page	Printed notice not read
Charter Township of Redford (REDFORD TWP CSO)	Health department page	Testing results not read
Charter Township of Redford (REDFORD TWP CSO)	Health department page	Health department notice not read
Charter Township of Redford (REDFORD TWP CSO)	News page	Printed notice not read
Charter Township of Redford (WAYNE CO/RDFRD/LIVONIA CSO)	Health department page	Testing results not read
Charter Township of Redford (WAYNE CO/RDFRD/LIVONIA CSO)	Health department page	Health department notice not read
Charter Township of Redford (WAYNE CO/RDFRD/LIVONIA CSO)	News page	Printed notice not read
Charter Township of Washington	Health department page	Testing results not read
Charter Township of Washington	Health department page	Health department notice not read
Charter Township of Washington	News page	Printed notice not read
Charter Township of Waterford DPW	Health department page	Testing results not read
Charter Township of Waterford DPW	Health department page	Health department notice not read
Charter Township of Waterford DPW	News page	Printed notice not read
Chassell Township	Health department page	Testing results not read
Chassell Township	Health department page	Health department notice not read
Chassell Township	News page	Printed notice not read
City of Adrian	Health department page	Testing results not read
City of Adrian	Health department page	Health department notice not read
City of Adrian	News page	Printed notice not read
City of Albion	Health department page	Testing results not read
City of Albion	Health department page	Health department notice not read
City of Albion	News page	Printed notice not read
City of Allegan	Health department page	Testing results not read
City of Allegan	Health department page	Health department notice not read
City of Allegan	News page	Printed notice not read
City of Allen Park	Health department page	Testing results not read
City of Allen Park	Health department page	Health department notice not read
City of Allen Park	News page	Printed notice not read
City of Alma	Health department page	Testing results not read
City of Alma	Health department page	Health department notice not read
City of Alma	News page	Printed notice not read
City of Alpena	Health department page	Testing results not read
City of Alpena	Health department page	Health department notice not read
City of Alpena	News page	Printed notice not read
City of Ann Arbor	Health department page	Testing results not read
City of Ann Arbor	Health department page	Health department notice not read
City of Ann Arbor	News page	Printed notice not read
City of Au Gres WWTP	Health department page	Testing results not read
City of Au Gres WWTP	Health department page	Health department notice not read
City of Au Gres WWTP	News page	Printed notice not read
City of Bad Axe	Health department page	Testing results not read
City of Bad Axe	Health department page	Health department notice not read
City of Bad Axe	News page	Printed notice not read
City of Battle Creek	Health department page	Testing results not read
City of Battle Creek	Health department page	Health department notice not read
City of Battle Creek	News page	Printed notice not read
City of Bay City	Health department page	Testing results not read
City of Bay City	Health department page	Health department notice not read
City of Bay City	News page	Printed notice not read
City of Belding	Health department page	Testing results not read
City of Belding	Health department page	Health department notice not read
City of Belding	News page	Printed notice not read
City of Benton Harbor	Health department page	Testing results not read
City of Benton Harbor	Health department page	Health department notice not read
City of Benton Harbor	News page	Printed notice not read
City of Big Rapids	Health department page	Testing results not read
City of Big Rapids	Health department page	Health department notice not read
City of Big Rapids	News page	Printed notice not read
CITY OF BLOOMFIELD HILLS	Health department page	Testing results not read
CITY OF BLOOMFIELD HILLS	Health department page	Health department notice not read
CITY OF BLOOMFIELD HILLS	News page	Printed notice not read
City of Boyne City	Health department page	Testing results not read
City of Boyne City	Health department page	Health department notice not read
City of Boyne City	News page	Printed notice not read
City of Brighton	Health department page	Testing results not read
City of Brighton	Health department page	Health department notice not read
City of Brighton	News page	Printed notice not read
City of Bronson	Health department page	Testing results not read
City of Bronson	Health department page	Health department notice not read
City of Bronson	News page	Printed notice not read
City of Brown City	Health department page	Testing results not read
City of Brown City	Health department page	Health department notice not read
City of Brown City	News page	Printed notice not read
City of Cadillac	Health department page	Testing results not read
City of Cadillac	Health department page	Health department notice not read
City of Cadillac	News page	Printed notice not read
City of Carson City	Health department page	Testing results not read
City of Carson City	Health department page	Health department notice not read
City of Carson City	News page	Printed notice not read
City of Caseville	Health department page	Testing results not read
City of Caseville	Health department page	Health department notice not read
City of Caseville	News page	Printed notice not read
City of Charlevoix	Health department page	Testing results not read
City of Charlevoix	Health department page	Health department notice not read
City of Charlevoix	News page	Printed notice not read
City of Charlotte	Health department page	Testing results not read
City of Charlotte	Health department page	Health department notice not read
City of Charlotte	News page	Printed notice not read
City of Cheboygan	Health department page	Testing results not read
City of Cheboygan	Health department page	Health department notice not read
City of Cheboygan	News page	Printed notice not read
City of Chelsea	Health department page	Testing results not read
City of Chelsea	Health department page	Health department notice not read
City of Chelsea	News page	Printed notice not read
City of Clare	Health department page	Testing results not read
City of Clare	Health department page	Health department notice not read
City of Clare	News page	Printed notice not read
City of Clio, maintained by Genesee County Drain Commission - Division of Water and Waste Services	Health department page	Testing results not read
City of Clio, maintained by Genesee County Drain Commission - Division of Water and Waste Services	Health department page	Health department notice not read
City of Clio, maintained by Genesee County Drain Commission - Division of Water and Waste Services	News page	Printed notice not read
City of Coleman	Health department page	Testing results not read
City of Coleman	Health department page	Health department notice not read
City of Coleman	News page	Printed notice not read
City of Coopersville	Health department page	Testing results not read
City of Coopersville	Health department page	Health department notice not read
City of Coopersville	News page	Printed notice not read
City of Croswell	Health department page	Testing results not read
City of Croswell	Health department page	Health department notice not read
City of Croswell	News page	Printed notice not read
CITY OF CRYSTAL FALLS	Health department page	Testing results not read
CITY OF CRYSTAL FALLS	Health department page	Health department notice not read
CITY OF CRYSTAL FALLS	News page	Printed notice not read
City of Davison	Health department page	Testing results not read
City of Davison	Health department page	Health department notice not read
City of Davison	News page	Printed notice not read
City of Dearborn (DEARBORN CSO)	Health department page	Testing results not read
City of Dearborn (DEARBORN CSO)	Health department page	Health department notice not read
City of Dearborn (DEARBORN CSO)	News page	Printed notice not read
City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division (WAYNE CO/DEARBORN HEIGHTS CSO)	Health department page	Testing results not read
City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division (WAYNE CO/DEARBORN HEIGHTS CSO)	Health department page	Health department notice not read
City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division (WAYNE CO/DEARBORN HEIGHTS CSO)	News page	Printed notice not read
City of Detroit Water and Sewerage Department and Great Lakes Water Authority (GLWA WRRF)	Health department page	Testing results not read
City of Detroit Water and Sewerage Department and Great Lakes Water Authority (GLWA WRRF)	Health department page	Health department notice not read
City of Detroit Water and Sewerage Department and Great Lakes Water Authority (GLWA WRRF)	News page	Printed notice not read
City of Dexter	Health department page	Testing results not read
City of Dexter	Health department page	Health department notice not read
City of Dexter	News page	Printed notice not read
City of Dowagiac	Health department page	Testing results not read
City of Dowagiac	Health department page	Health department notice not read
City of Dowagiac	News page	Printed notice not read
City of Durand	Health department page	Testing results not read
City of Durand	Health department page	Health department notice not read
City of Durand	News page	Printed notice not read
City of East Jordan	Health department page	Testing results not read
City of East Jordan	Health department page	Health department notice not read
City of East Jordan	News page	Printed notice not read
City of East Lansing	Health department page	Testing results not read
City of East Lansing	Health department page	Health department notice not read
City of East Lansing	News page	Printed notice not read
City of Eaton Rapids	Health department page	Testing results not read
City of Eaton Rapids	Health department page	Health department notice not read
City of Eaton Rapids	News page	Printed notice not read
City of Escanaba	Health department page	Testing results not read
City of Escanaba	Health department page	Health department notice not read
City of Escanaba	News page	Printed notice not read
City of Essexville (ESSEXVILLE CSO RTB)	Health department page	Testing results not read
City of Essexville (ESSEXVILLE CSO RTB)	Health department page	Health department notice not read
City of Essexville (ESSEXVILLE CSO RTB)	News page	Printed notice not read
City of Fennville	Health department page	Testing results not read
City of Fennville	Health department page	Health department notice not read
City of Fennville	News page	Printed notice not read
City of Flint	Health department page	Testing results not read
City of Flint	Health department page	Health department notice not read
City of Flint	News page	Printed notice not read
City of Flushing	Health department page	Testing results not read
City of Flushing	Health department page	Health department notice not read
City of Flushing	News page	Printed notice not read
CITY OF FRANKENMUTH	Health department page	Testing results not read
CITY OF FRANKENMUTH	Health department page	Health department notice not read
CITY OF FRANKENMUTH	News page	Printed notice not read
CITY OF GARDEN CITY	Health department page	Testing results not read
CITY OF GARDEN CITY	Health department page	Health department notice not read
CITY OF GARDEN CITY	News page	Printed notice not read
City of Gladstone	Health department page	Testing results not read
City of Gladstone	Health department page	Health department notice not read
City of Gladstone	News page	Printed notice not read
City of Gladwin	Health department page	Testing results not read
City of Gladwin	Health department page	Health department notice not read
City of Gladwin	News page	Printed notice not read
City of Grand Ledge	Health department page	Testing results not read
City of Grand Ledge	Health department page	Health department notice not read
City of Grand Ledge	News page	Printed notice not read
City of Grand Rapids	Health department page	Testing results not read
City of Grand Rapids	Health department page	Health department notice not read
City of Grand Rapids	News page	Printed notice not read
City of Grandville	Health department page	Testing results not read
City of Grandville	Health department page	Health department notice not read
City of Grandville	News page	Printed notice not read
City of Grant	Health department page	Testing results not read
City of Grant	Health department page	Health department notice not read
City of Grant	News page	Printed notice not read
City of Greenville	Health department page	Testing results not read
City of Greenville	Health department page	Health department notice not read
City of Greenville	News page	Printed notice not read
City of Harbor Beach	Health department page	Testing results not read
City of Harbor Beach	Health department page	Health department notice not read
City of Harbor Beach	News page	Printed notice not read
City of Harrisville	Health department page	Testing results not read
City of Harrisville	Health department page	Health department notice not read
City of Harrisville	News page	Printed notice not read
City of Hartford	Health department page	Testing results not read
City of Hartford	Health department page	Health department notice not read
City of Hartford	News page	Printed notice not read
City of Hastings	Health department page	Testing results not read
City of Hastings	Health department page	Health department notice not read
City of Hastings	News page	Printed notice not read
City of Holland	Health department page	Testing results not read
City of Holland	Health department page	Health department notice not read
City of Holland	News page	Printed notice not read
City of Howell	Health department page	Testing results not read
City of Howell	Health department page	Health department notice not read
City of Howell	News page	Printed notice not read
City of Hudson	Health department page	Testing results not read
City of Hudson	Health department page	Health department notice not read
City of Hudson	News page	Printed notice not read
City of Imlay City	Health department page	Testing results not read
City of Imlay City	Health department page	Health department notice not read
City of Imlay City	News page	Printed notice not read
City of Inkster (INKSTER/DEARBORN HEIGHTS CSO)	Health department page	Testing results not read
City of Inkster (INKSTER/DEARBORN HEIGHTS CSO)	Health department page	Health department notice not read
City of Inkster (INKSTER/DEARBORN HEIGHTS CSO)	News page	Printed notice not read
City of Ishpeming	Health department page	Testing results not read
City of Ishpeming	Health department page	Health department notice not read
City of Ishpeming	News page	Printed notice not read
City of Ithaca	Health department page	Testing results not read
City of Ithaca	Health department page	Health department notice not read
City of Ithaca	News page	Printed notice not read
City of Jackson	Health department page	Testing results not read
City of Jackson	Health department page	Health department notice not read
City of Jackson	News page	Printed notice not read
City of Jonesville	Health department page	Testing results not read
City of Jonesville	Health department page	Health department notice not read
City of Jonesville	News page	Printed notice not read
City of Kalamazoo	Health department page	Testing results not read
City of Kalamazoo	Health department page	Health department notice not read
City of Kalamazoo	News page	Printed notice not read
City of Laingsburg	Health department page	Testing results not read
City of Laingsburg	Health department page	Health department notice not read
City of Laingsburg	News page	Printed notice not read
City of Lansing	Health department page	Testing results not read
City of Lansing	Health department page	Health department notice not read
City of Lansing	News page	Printed notice not read
City of Lapeer	Health department page	Testing results not read
City of Lapeer	Health department page	Health department notice not read
City of Lapeer	News page	Printed notice not read
City of Leslie	Health department page	Testing results not read
City of Leslie	Health department page	Health department notice not read
City of Leslie	News page	Printed notice not read
City of Lincooln Park	Health department page	Testing results not read
City of Lincooln Park	Health department page	Health department notice not read
City of Lincooln Park	News page	Printed notice not read
City of Litchfield	Health department page	Testing results not read
City of Litchfield	Health department page	Health department notice not read
City of Litchfield	News page	Printed notice not read
City of Lowell	Health department page	Testing results not read
City of Lowell	Health department page	Health department notice not read
City of Lowell	News page	Printed notice not read
City of Ludington	Health department page	Testing results not read
City of Ludington	Health department page	Health department notice not read
City of Ludington	News page	Printed notice not read
City of Luna Pier	Health department page	Testing results not read
City of Luna Pier	Health department page	Health department notice not read
City of Luna Pier	News page	Printed notice not read
City of Mackinac Island	Health department page	Testing results not read
City of Mackinac Island	Health department page	Health department notice not read
City of Mackinac Island	News page	Printed notice not read
City of Manistee	Health department page	Testing results not read
City of Manistee	Health department page	Health department notice not read
City of Manistee	News page	Printed notice not read
City of Manistique	Health department page	Testing results not read
City of Manistique	Health department page	Health department notice not read
City of Manistique	News page	Printed notice not read
City of Marine City	Health department page	Testing results not read
City of Marine City	Health department page	Health department notice not read
City of Marine City	News page	Printed notice not read
City of Marlette	Health department page	Testing results not read
City of Marlette	Health department page	Health department notice not read
City of Marlette	News page	Printed notice not read
City of Marquette	Health department page	Testing results not read
City of Marquette	Health department page	Health department notice not read
City of Marquette	News page	Printed notice not read
City of Marshall	Health department page	Testing results not read
City of Marshall	Health department page	Health department notice not read
City of Marshall	News page	Printed notice not read
City of Marysville	Health department page	Testing results not read
City of Marysville	Health department page	Health department notice not read
City of Marysville	News page	Printed notice not read
City of Mason	Health department page	Testing results not read
City of Mason	Health department page	Health department notice not read
City of Mason	News page	Printed notice not read
City of Memphis	Health department page	Testing results not read
City of Memphis	Health department page	Health department notice not read
City of Memphis	News page	Printed notice not read
City of Menominee	Health department page	Testing results not read
City of Menominee	Health department page	Health department notice not read
City of Menominee	News page	Printed notice not read
City of Midland	Health department page	Testing results not read
City of Midland	Health department page	Health department notice not read
City of Midland	News page	Printed notice not read
City of Milan	Health department page	Testing results not read
City of Milan	Health department page	Health department notice not read
City of Milan	News page	Printed notice not read
City of Monroe	Health department page	Testing results not read
City of Monroe	Health department page	Health department notice not read
City of Monroe	News page	Printed notice not read
City of Mount Clemens (MT CLEMENS WWTP)	Health department page	Testing results not read
City of Mount Clemens (MT CLEMENS WWTP)	Health department page	Health department notice not read
City of Mount Clemens (MT CLEMENS WWTP)	News page	Printed notice not read
City of Munising	Health department page	Testing results not read
City of Munising	Health department page	Health department notice not read
City of Munising	News page	Printed notice not read
City of New Baltimore	Health department page	Testing results not read
City of New Baltimore	Health department page	Health department notice not read
City of New Baltimore	News page	Printed notice not read
City of New Buffalo	Health department page	Testing results not read
City of New Buffalo	Health department page	Health department notice not read
City of New Buffalo	News page	Printed notice not read
City of Newaygo	Health department page	Testing results not read
City of Newaygo	Health department page	Health department notice not read
City of Newaygo	News page	Printed notice not read
City of Norway	Health department page	Testing results not read
City of Norway	Health department page	Health department notice not read
City of Norway	News page	Printed notice not read
City of Olivet	Health department page	Testing results not read
City of Olivet	Health department page	Health department notice not read
City of Olivet	News page	Printed notice not read
City of Onaway	Health department page	Testing results not read
City of Onaway	Health department page	Health department notice not read
City of Onaway	News page	Printed notice not read
City of Orchard Lake Village	Health department page	Testing results not read
City of Orchard Lake Village	Health department page	Health department notice not read
City of Orchard Lake Village	News page	Printed notice not read
City of Ovid	Health department page	Testing results not read
City of Ovid	Health department page	Health department notice not read
City of Ovid	News page	Printed notice not read
City of Owosso	Health department page	Testing results not read
City of Owosso	Health department page	Health department notice not read
City of Owosso	News page	Printed notice not read
City of Perry, Department of Public Works	Health department page	Testing results not read
City of Perry, Department of Public Works	Health department page	Health department notice not read
City of Perry, Department of Public Works	News page	Printed notice not read
City of Petersburg	Health department page	Testing results not read
City of Petersburg	Health department page	Health department notice not read
City of Petersburg	News page	Printed notice not read
City of Petoskey	Health department page	Testing results not read
City of Petoskey	Health department page	Health department notice not read
City of Petoskey	News page	Printed notice not read
City of Pinconning	Health department page	Testing results not read
City of Pinconning	Health department page	Health department notice not read
City of Pinconning	News page	Printed notice not read
City of Plainwell	Health department page	Testing results not read
City of Plainwell	Health department page	Health department notice not read
City of Plainwell	News page	Printed notice not read
City of Port Huron	Health department page	Testing results not read
City of Port Huron	Health department page	Health department notice not read
City of Port Huron	News page	Printed notice not read
City of Portland	Health department page	Testing results not read
City of Portland	Health department page	Health department notice not read
City of Portland	News page	Printed notice not read
City of Potterville	Health department page	Testing results not read
City of Potterville	Health department page	Health department notice not read
City of Potterville	News page	Printed notice not read
City of Reading	Health department page	Testing results not read
City of Reading	Health department page	Health department notice not read

Required by a permit: public-notice channels in this state and what our monitor finds on each
Operator or agency	Channel	What we find
Acacia Park CSO Drainage District (OAKLAND CO-ACACIA PARK CSO RTB) · MI0037427	Operator's notice page	CSO public notification not read
BELLEVILLE CSO · MI0035696	Operator's notice page	CSO public notification not read
Bloomfield Village CSO Drainage District (BLOOMFIELD VILLAGE CSO RTB) · MI0048046	Operator's notice page	CSO public notification not read
CAPAC WWSL · MI0021733	Operator's notice page	CSO public notification not read
Charter Township of Redford (REDFORD TWP CSO) · MI0051829	Operator's notice page	CSO public notification not read
Charter Township of Redford (WAYNE CO/RDFRD/LIVONIA CSO) · MI0051535	Operator's notice page	CSO public notification not read
City of Bay City · MI0022284	Operator's notice page	CSO public notification not read
CITY OF BLOOMFIELD HILLS · MI0025461	Operator's notice page	CSO public notification not read
City of Cheboygan · MI0020303	Operator's notice page	CSO public notification not read
City of Croswell · MI0021083	Operator's notice page	CSO public notification not read
CITY OF CRYSTAL FALLS · MI0048879	Operator's notice page	CSO public notification not read
City of Dearborn (DEARBORN CSO) · MI0025542	Operator's notice page	CSO public notification not read
City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division (WAYNE CO/DEARBORN HEIGHTS CSO) · MI0051489	Operator's notice page	CSO public notification not read
City of Detroit Water and Sewerage Department and Great Lakes Water Authority (GLWA WRRF) · MI0022802	State alert page	Read as a feed
City of East Lansing · MI0022853	Operator's notice page	CSO public notification not read
City of Essexville (ESSEXVILLE CSO RTB) · MI0022918	Operator's notice page	CSO public notification not read
CITY OF GARDEN CITY · MI0051543	Operator's notice page	CSO public notification not read
City of Gladwin · MI0023001	Operator's notice page	CSO public notification not read
City of Grand Rapids · MI0026069	Operator's notice page	CSO public notification not read
City of Inkster (INKSTER/DEARBORN HEIGHTS CSO) · MI0051837	Operator's notice page	CSO public notification not read
City of Lansing · MI0023400	Operator's notice page	CSO public notification not read
City of Manistee · MI0020362	Operator's notice page	CSO public notification not read
City of Manistique · MI0023515	Operator's notice page	CSO public notification not read
City of Marysville · MI0020656	Operator's notice page	CSO public notification not read
City of Menominee · MI0025631	Operator's notice page	CSO public notification not read
City of Mount Clemens (MT CLEMENS WWTP) · MI0023647	Operator's notice page	CSO public notification not read
City of Norway · MI0020214	Operator's notice page	CSO public notification not read
City of Port Huron · MI0023833	Operator's notice page	CSO public notification not read
City of Saginaw · MI0025577	Operator's notice page	CSO public notification not read
City of Sault Ste. Marie · MI0024058	Operator's notice page	CSO public notification not read
City of St. Clair · MI0020591	Operator's notice page	CSO public notification not read
City of St. Joseph (ST JOSEPH CSO) · MI0026735	Operator's notice page	CSO public notification not read
City of Wakefield · MI0021440	Operator's notice page	CSO public notification not read
CITY OF WESTLAND · MI0051497	Operator's notice page	CSO public notification not read
CITY OF WESTLAND · MI0051501	Operator's notice page	CSO public notification not read
DEARBORN CSO DEWATERING · MI0054356	Operator's notice page	CSO public notification not read
DEARBORN HEIGHTS CSO · MI0051811	Operator's notice page	CSO public notification not read
ECORSE CSO · MI0028525	Operator's notice page	CSO public notification not read
George W. Kuhn Drain Drainage District (GEORGE W KUHN DR DIST CSO RTB) · MI0026115	Operator's notice page	CSO public notification not read
GROSSE POINTE FARMS · MI0026077	Operator's notice page	CSO public notification not read
GROSSE POINTE PARK CSO · MI0037273	Operator's notice page	CSO public notification not read
GROSSE POINTE SHORES CSO · MI0026085	Operator's notice page	CSO public notification not read
Iron Mountain/Kingsford Joint Sewage Authority (IRON MOUNTAIN-KINGSFORD WWTP) · MI0023205	Operator's notice page	CSO public notification not read
LIVONIA CSO · MI0051802	Operator's notice page	CSO public notification not read
Macomb County Public Works Office (CHAPATON RTB) · MI0025585	Operator's notice page	CSO public notification not read
Macomb County Public Works Office (MARTIN RTB) · MI0025453	Operator's notice page	CSO public notification not read
Milk River Intercounty Drain Drainage District (MILK RIVER CSO RTB) · MI0025500	Operator's notice page	CSO public notification not read
MORENCI WWSL · MI0020681	Operator's notice page	CSO public notification not read
NILES WWTP · MI0023701	Operator's notice page	CSO public notification not read
North Houghton County Water and Sewer Authority (NORTH HOUGHTON CO W&SA CSO) · MI0043982	Operator's notice page	CSO public notification not read
OAKLAND CO DPW-FARM EVERGR CSO · MI0037621	Operator's notice page	CSO public notification not read
Oakland County Water Resources Commissioner's Office (BIRMINGHAM CSO RTB) · MI0025534	Operator's notice page	CSO public notification not read
Saginaw Charter Township · MI0023973	Operator's notice page	CSO public notification not read
Village of Dundee WWTP (Dundee WWTP) · MI0020401	Operator's notice page	CSO public notification not read
WAYNE CO-LIVONIA CSO · MI0051551	Operator's notice page	CSO public notification not read
WAYNE CO-LIVONIA/WESTLAND CSO · MI0051560	Operator's notice page	CSO public notification not read
Wayne County (WAYNE CO/INKSTER CSO) · MI0051471	Operator's notice page	CSO public notification not read
Wayne County (WAYNE CO/INKSTER/DRBRN HTS CSO) · MI0051462	Operator's notice page	CSO public notification not read
Wayne County Drainage Board (SOUTHGATE-WYANDOTTE CSO RTF) · MI0036072	Operator's notice page	CSO public notification not read
Wayne County/River Rouge CSO RTB (RIVER ROUGE CSO RTB) · MI0028819	Operator's notice page	CSO public notification not read
YALE WWSL · MI0021270	Operator's notice page	CSO public notification not read

Voluntary: public-notice channels in this state and what our monitor finds on each
Operator or agency	Channel	What we find
Clinton River Watershed Council	Shared results page	Voluntary page unchanged since Nov 4, 2026
Detroit Riverkeeper	Shared results page	Voluntary page unchanged since Nov 4, 2026
Friends of the Rouge	Shared results page	Voluntary page unchanged since Nov 4, 2026
Huron River Watershed Council	Shared results page	Voluntary page behind a bot check; not read
Michigan EGLE (SSO, CSO and RTB program page)	State alert page	Voluntary page behind a bot check; not read
Michigan EGLE BeachGuard (beach monitoring)	State alert page	Voluntary page behind a login; not read
Michigan harmful algal bloom reports	State alert page	Voluntary page behind a bot check; not read
MiEnviro e-mail subscriptions (beach advisories)	Email list	Email list; not read

Source: DirtyWaterWatch register of public-notice channels and its page monitor, checked 2026-11-05 01:08 UTC.

How each state reports

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Discharge or advisory reported 5 waters

Detroit River (5380)Lower River Rouge (4063)Middle River Rouge (660)River Rouge (4179)River Rouge (2358)

Caution 28 waters

Ashcroft-Sherwood Drain (189)Bean Creek (6)Bell Branch (260)Belle River (1)Belleville Lake (4)Black River (797)Black River (5)Cheboygan River (4)Clinton River (313)Grand River (18144)Hammell Creek (8)Lake Saint Clair (415)Manistique River (83)Menominee River (155)Milk River (226)Mill Creek (0)Paint River (0)Red Cedar River (2666)Red Run (256)Saginaw River (1269)Saint Joseph River (135)Saint Joseph River (204)Shiawassee River (156)St. Joseph River (18)Tittabawassee River (173)Trenton Channel (622)Unnamed tributary to Belle River (0)Upper River Rouge (158)

End not confirmed 2 waters

Flint River (229)Saint Marys River (94)

No current status shown 445 waters

Sewer operators

Get local alerts from a sewer operator: open its page for its public alert link.

571 sewer operators; the list appears as you scroll.

What this page covers

Post-discharge periods and their sources

No period: a water is red only while the discharge is reported ongoing. EGLE must promptly post each notification on its website, its MiEnviro list of sewage discharges, and combined sewer operators in the Great Lakes basin must give the public notice within 4 hours (40 CFR 122.38). Local health departments decide on beach advisories and closures from their own sampling. This site marks a reported discharge while it runs and applies its own caution after it ends

Source: MCL 324.3112a(1)-(3); 40 CFR 122.38; Great Lakes Water Authority CSO Public Notification Plan (2018); EGLE MiEnviro CSO/SSO List. DirtyWaterWatch applies the period described here.

Michigan's period on the methods page · How long each status lasts, in every state

Sources checked automatically

EGLE MiEnviro CSO/SSO List · we expect a successful check at least every 1 hour · last successful check 2026-11-05 01:08 UTC

6 other public sources for Michigan are listed on the Sources page.

The last 90 days in Michigan

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Plum: algal bloom advisory. Red or amber with a light line inside: beach advisory or caution. Dotted: monthly report (days with discharge, dates not given). Grey: no current status on the water outline. Purple hatching: source update overdue.

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-05 01:25 UTC.

Reported discharges in Michigan over time

Discharges affecting Michigan waters, last 12 months1,7811,781 affecting Michigan waters: 1,781 reported by Michigan operators, none arriving from upstreamDecember 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once. Arriving discharges are estimated from modeled downstream reaches.
Days with a discharge affecting Michigan waters, last 12 months273Reported by Michigan operators: 273 · Arriving from other states, estimated: 0 (counted apart; together they need not equal the total)December 2025 to November 2026A day counts once however many discharges were under way on it.
Hours with a discharge or advisory status on at least one Michigan water, last 12 months5,986Reported by Michigan operators: 5,986 · Arriving from other states, estimated: 0December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
2026 season with a discharge or advisory status (Michigan waters)79%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.

Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater. Outfall: a pipe or outlet where wastewater enters a water body.

Reported discharges per month

8,617 reported discharges, January 2022 to November 2026.

Combined sewer overflow
Sanitary sewer overflow
Treatment bypass, blended or other

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover January 1, 2022 to November 4, 2026.

Show table

Reported discharges per month
Month	Combined sewer overflow	Sanitary sewer overflow	Treatment bypass, blended or other	Total	Counted from
January 2022	1	15	7	23	Source records
February 2022	112	25	15	152	Source records
March 2022	76	30	7	113	Source records
April 2022	149	45	21	215	Source records
May 2022	195	33	6	234	Source records
June 2022	150	25	3	178	Source records
July 2022	149	22	11	182	Source records
August 2022	227	19	5	251	Source records
September 2022	66	14	3	83	Source records
October 2022	53	15	5	73	Source records
November 2022	30	18	5	53	Source records
December 2022	40	19	6	65	Source records
January 2023	42	15	4	61	Source records
February 2023	162	41	11	214	Source records
March 2023	173	25	7	205	Source records
April 2023	144	82	28	254	Source records
May 2023	53	29	10	92	Source records
June 2023	66	23	1	90	Source records
July 2023	311	28	11	350	Source records
August 2023	250	51	16	317	Source records
September 2023	50	25	1	76	Source records
October 2023	98	20	3	121	Source records
November 2023	37	10	5	52	Source records
December 2023	52	15	3	70	Source records
January 2024	134	57	13	204	Source records
February 2024	23	17	4	44	Source records
March 2024	88	29	6	123	Source records
April 2024	170	26	7	203	Source records
May 2024	139	24	8	171	Source records
June 2024	260	21	1	282	Source records
July 2024	234	50	11	295	Source records
August 2024	251	28	9	288	Source records
September 2024	23	21	2	46	Source records
October 2024	70	25	2	97	Source records
November 2024	72	17	7	96	Source records
December 2024	68	11	5	84	Source records
January 2025	59	21	1	81	Source records
February 2025	13	21	4	38	Source records
March 2025	73	46	8	127	Source records
April 2025	117	70	25	212	Source records
May 2025	135	30	3	168	Source records
June 2025	166	22	5	193	Source records
July 2025	183	33	3	219	Source records
August 2025	90	15	4	109	Source records
September 2025	82	15	6	103	Source records
October 2025	55	12	2	69	Source records
November 2025	43	16	1	60	Source records
December 2025	88	17	5	110	Source records
January 2026	17	18	2	37	Source records
February 2026	15	26	6	47	Source records
March 2026	171	50	13	234	Source records
April 2026	220	120	49	389	Source records
May 2026	80	26	9	115	Source records
June 2026	213	33	3	249	Source records
July 2026	96	30	5	131	Source records
August 2026	82	30	4	116	Source records
September 2026	190	27	4	221	Source records
October 2026	95	26	9	130	Source records
November 2026	0	2	0	2	Source records

Hours with a discharge or advisory status per month

Hours when at least one water in the state had a discharge or advisory status under DirtyWaterWatch rules.

Discharge or advisory reported

4,032 discharge reports have no end time and are not marked ongoing; under DirtyWaterWatch rules they show caution, not a discharge or advisory status, and add no hours here. 127 discharges reported to last more than 31 days are counted as 31 days. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover March 4, 1985 to November 4, 2026.

Show table

Hours with a discharge or advisory status per month
Month	Hours with a discharge or advisory status	Hours from post-discharge periods	Hours in the month
January 2022	467	467	744
February 2022	612	612	672
March 2022	744	744	744
April 2022	720	720	720
May 2022	744	744	744
June 2022	410	410	720
July 2022	202	202	744
August 2022	526	526	744
September 2022	475	475	720
October 2022	136	136	744
November 2022	283	283	720
December 2022	548	548	744
January 2023	408	408	744
February 2023	365	365	672
March 2023	689	689	744
April 2023	720	720	720
May 2023	569	569	744
June 2023	189	189	720
July 2023	565	565	744
August 2023	628	628	744
September 2023	284	284	720
October 2023	218	218	744
November 2023	709	709	720
December 2023	178	178	744
January 2024	600	600	744
February 2024	247	247	696
March 2024	423	423	744
April 2024	631	631	720
May 2024	620	620	744
June 2024	720	720	720
July 2024	664	664	744
August 2024	370	370	744
September 2024	251	251	720
October 2024	344	344	744
November 2024	296	296	720
December 2024	166	166	744
January 2025	525	525	744
February 2025	440	440	672
March 2025	700	700	744
April 2025	693	693	720
May 2025	744	744	744
June 2025	505	505	720
July 2025	643	643	744
August 2025	450	450	744
September 2025	324	324	720
October 2025	691	691	744
November 2025	138	138	720
December 2025	176	176	744
January 2026	293	293	744
February 2026	539	539	672
March 2026	654	654	744
April 2026	720	720	720
May 2026	722	722	744
June 2026	720	720	720
July 2026	555	555	744
August 2026	447	447	744
September 2026	434	434	720
October 2026	631	631	744
November 2026	94	94	94

Days with a reported discharge per month

A day counts when any counted discharge was under way on it, from its start to its reported end in Eastern Time; a report with no end counts its start day.

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover January 1, 2022 to November 4, 2026.

Show table

Days with a reported discharge per month
Month	Days with a reported discharge	Coverage
January 2022	23
February 2022	26
March 2022	29
April 2022	30
May 2022	31
June 2022	24
July 2022	26
August 2022	28
September 2022	23
October 2022	18
November 2022	21
December 2022	28
January 2023	23
February 2023	23
March 2023	31
April 2023	30
May 2023	28
June 2023	23
July 2023	29
August 2023	28
September 2023	24
October 2023	20
November 2023	17
December 2023	22
January 2024	28
February 2024	19
March 2024	26
April 2024	29
May 2024	28
June 2024	22
July 2024	31
August 2024	25
September 2024	22
October 2024	24
November 2024	21
December 2024	17
January 2025	21
February 2025	19
March 2025	30
April 2025	30
May 2025	29
June 2025	24
July 2025	31
August 2025	20
September 2025	22
October 2025	17
November 2025	16
December 2025	20
January 2026	21
February 2026	21
March 2026	27
April 2026	30
May 2026	29
June 2026	27
July 2026	24
August 2026	28
September 2026	19
October 2026	25
November 2026	2

Reported discharges per year, 2000 to 2026

57,033 reported discharges, 2000 to 2026.

Combined sewer overflow
Sanitary sewer overflow
Treatment bypass, blended or other

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover March 4, 1985 to November 4, 2026.

Show table

Reported discharges per year, 2000 to 2026
Year	Combined sewer overflow	Sanitary sewer overflow	Treatment bypass, blended or other	Total
2000	0	0	0	0
2001	2,457	522	61	3,040
2002	1,584	415	13	2,012
2003	1,967	366	5	2,338
2004	2,764	393	11	3,168
2005	2,630	405	1	3,036
2006	3,882	448	2	4,332
2007	1,890	341	0	2,231
2008	1,815	480	4	2,299
2009	1,975	450	3	2,428
2010	1,550	313	1	1,864
2011	1,909	668	1	2,578
2012	1,210	258	0	1,468
2013	1,572	436	1	2,009
2014	1,561	357	22	1,940
2015	1,229	268	52	1,549
2016	1,479	282	59	1,820
2017	1,331	309	97	1,737
2018	1,500	373	108	1,981
2019	1,855	352	87	2,294
2020	1,672	384	87	2,143
2021	1,721	358	70	2,149
2022	1,248	280	94	1,622
2023	1,438	364	100	1,902
2024	1,532	326	75	1,933
2025	1,104	318	67	1,489
2026	1,179	388	104	1,671

Reported volume per year

Gallons (axis: K thousand, M million), summed from the 53,072 reports that gave a volume as a number (3,961 did not).

3,961 of 57,033 discharge reports gave no volume as a number (1 gave a range); only numbers are summed. 45 reports give more than 5 billion gallons for a single discharge, which looks like an entry error; they are not summed.

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover March 4, 1985 to November 4, 2026.

Show table

Reported volume per year
Year	Reported volume, gallons	Reports with a volume	Reports without a volume
2000	0	0	0
2001	26,623,672,979	2,294	746
2002	22,971,592,873	1,916	96
2003	27,688,339,931	2,105	233
2004	36,692,118,524	2,919	249
2005	19,447,868,229	2,120	916
2006	37,362,382,506	3,190	1,142
2007	27,321,676,349	2,167	64
2008	44,736,551,116	2,240	59
2009	41,544,372,026	2,389	39
2010	18,579,462,858	1,830	34
2011	68,151,128,493	2,562	16
2012	11,551,069,355	1,393	75
2013	36,022,798,060	1,996	13
2014	40,658,446,825	1,928	12
2015	22,803,433,444	1,536	13
2016	31,281,962,200	1,814	6
2017	30,907,973,389	1,733	4
2018	48,090,141,819	1,960	21
2019	33,454,276,543	2,288	6
2020	37,229,404,727	2,142	1
2021	47,885,149,116	2,146	3
2022	10,710,784,219	1,612	10
2023	20,397,239,464	1,892	10
2024	24,519,131,264	1,918	15
2025	10,143,497,239	1,443	46
2026	10,769,304,211	1,539	132

Hours with a discharge or advisory status per year

Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.

Discharge or advisory reported

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover March 4, 1985 to November 4, 2026.

Show table

Hours with a discharge or advisory status per year
Year	Hours with a discharge or advisory status	Share of the year
2000	0	0.0%
2001	7,689	87.8%
2002	5,492	62.7%
2003	5,090	58.1%
2004	7,006	79.8%
2005	6,081	69.4%
2006	6,619	75.6%
2007	6,370	72.7%
2008	6,403	72.9%
2009	4,270	48.7%
2010	5,728	65.4%
2011	6,759	77.2%
2012	4,797	54.6%
2013	5,027	57.4%
2014	6,061	69.2%
2015	4,855	55.4%
2016	5,112	58.2%
2017	6,015	68.7%
2018	6,512	74.3%
2019	7,109	81.2%
2020	5,882	67.0%
2021	5,608	64.0%
2022	5,866	67.0%
2023	5,521	63.0%
2024	5,331	60.7%
2025	6,028	68.8%
2026	5,810	78.6%

Share of the May to October season with a discharge or advisory status

Share of the hours from May 1 to October 31 with a discharge or advisory status under DirtyWaterWatch rules.

Discharge or advisory reported

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover March 4, 1985 to November 4, 2026.

Show table

Share of the May to October season with a discharge or advisory status
Season	Share with a discharge or advisory status	Hours with a discharge or advisory status	Hours a source covered	Hours in the season
2000	0.0%	0	4,416	4,416
2001	91.2%	4,027	4,416	4,416
2002	70.4%	3,108	4,416	4,416
2003	53.4%	2,359	4,416	4,416
2004	72.8%	3,216	4,416	4,416
2005	55.0%	2,429	4,416	4,416
2006	74.9%	3,308	4,416	4,416
2007	71.9%	3,176	4,416	4,416
2008	66.5%	2,938	4,416	4,416
2009	41.7%	1,840	4,416	4,416
2010	54.0%	2,386	4,416	4,416
2011	66.9%	2,955	4,416	4,416
2012	65.5%	2,891	4,416	4,416
2013	51.5%	2,274	4,416	4,416
2014	65.5%	2,893	4,416	4,416
2015	52.5%	2,317	4,416	4,416
2016	67.2%	2,966	4,416	4,416
2017	67.6%	2,987	4,416	4,416
2018	62.5%	2,759	4,416	4,416
2019	88.1%	3,893	4,416	4,416
2020	65.7%	2,901	4,416	4,416
2021	73.1%	3,227	4,416	4,416
2022	56.4%	2,492	4,416	4,416
2023	55.5%	2,453	4,416	4,416
2024	67.2%	2,969	4,416	4,416
2025	76.0%	3,357	4,416	4,416
2026	79.5%	3,510	4,416	4,416

Reported discharges by calendar month, all years

Every counted discharge report, by the calendar month it began.

Months are summed over every year a tracked source covers; the table gives the number of years behind each month.

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover March 4, 1985 to November 4, 2026.

Show table

Reported discharges by calendar month, all years
Month	Reported discharges	Years of records
January	2,716	41
February	2,823	41
March	4,540	42
April	5,883	42
May	7,102	42
June	6,216	42
July	6,269	42
August	6,144	42
September	4,788	42
October	4,268	42
November	3,212	42
December	3,090	41

Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 7,069, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Sources: il-mwrd-lake-michigan-reversals; mi-egle-mienviro-cso-sso-list. Records cover March 4, 1985 to November 4, 2026.

Show table

Reported discharges by wastewater outlet
Wastewater outlet	Sewer operator	Reported discharges
001 west of Telegraph Road/Silvery Lane intersection, north bank	City of Dearborn	1,092
013 Greenfield Village, west bank	City of Dearborn	1,086
015 Willow Street at Walnut Street	City of Lansing WWTP	1,058
032 Wilson Street at Herbert Street	City of Lansing WWTP	1,053
024 Lenawee Street East of Grand Avenue	City of Lansing WWTP	1,053
012 Knollwood at Cypress	City of Lansing WWTP	1,052
017 Turner Street at Beaver Street	City of Lansing WWTP	1,052
011 Roosevelt at Cypress	City of Lansing WWTP	1,050
019 Oakland Avenue at Grand Avenue	City of Lansing WWTP	1,048
016 North Grand River Avenue	City of Lansing WWTP	1,044
Other outlets (7059)		45,583
Outlet not stated		880

How these charts are counted

We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.

il-mwrd-lake-michigan-reversals: records from March 4, 1985 to July 3, 2023
mi-egle-mienviro-cso-sso-list: records from January 1, 2001 to the latest update

Reports in Michigan, newest first

The table appears as you scroll.

The newest reports in Michigan
When	Report	Status
Nov 3, 7:00 AM	Blackman Charter Township · SSO · volume not reported report · notice	ongoing
Nov 2, 3:45 PM	Oakland County Water Resources… · SSO · volume not reported report · notice	ongoing
Oct 30, 6:00 PM	Bath Charter Township · SSO · volume not reported report · notice	ongoing
Oct 30, 1:30 PM	City of Traverse City · SSO · volume not reported report · notice	ongoing
Oct 29, 5:50 PM	City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division · Middle River Rouge, Lower River Rouge · CSO · volume in each report map	to Nov 5, 4:50 PM
Oct 29, 5:50 PM	City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division · Middle River Rouge, Lower River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:50 PM
Oct 29, 5:50 PM	City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division · Middle River Rouge, Lower River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:50 PM
Oct 29, 5:50 PM	City of Dearborn Heights, Wayne County Department of Public Services, Environmental Services Division · Middle River Rouge, Lower River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:50 PM
Oct 29, 5:50 PM	Wayne County · Lower River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:50 PM
Oct 29, 5:32 PM	Great Lakes Water Authority (GLWA) · Detroit River, River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:32 PM
Oct 29, 5:31 PM	Great Lakes Water Authority (GLWA) · Detroit River, River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:31 PM
Oct 29, 5:22 PM	City of Dearborn · Lower River Rouge, River Rouge · CSO · volume in each report map	to Nov 5, 4:22 PM
Oct 29, 5:22 PM	City of Dearborn · Lower River Rouge, River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:22 PM
Oct 29, 5:22 PM	City of Dearborn · Lower River Rouge, River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:22 PM
Oct 29, 5:21 PM	Great Lakes Water Authority (GLWA) · Detroit River, River Rouge · CSO · volume not reported report · notice · map	to Nov 5, 4:21 PM
Oct 28, 2:00 PM	RHP Properties · SSO · volume not reported report · notice	ongoing
Oct 27, 10:45 AM	South Haven Area Water-Sewer Authority · Black River · SSO · 1,100 gallons report · notice · map	to Nov 12, 7:19 AM
Oct 26, 2:40 PM	Lake Mitchell Sewer Authority · SSO · volume not reported report · notice	ongoing
Oct 26, 10:00 AM	City of Traverse City · SSO · volume not reported report · notice	ongoing
Oct 26, 8:30 AM	Sun Communities · Bypass · volume not reported report · notice	ongoing
Oct 25, 1:00 PM	Village of Cassopolis · SSO · volume not reported report · notice	ongoing
Oct 23, 11:00 AM	City of Flint · Flint River · SSO · volume not reported report · notice · map	to Nov 22, 10:00 AM
Oct 22, 7:00 PM	Oakland County Water Resources Commissioner's Office (sanitary systems) · SSO · volume not reported report · notice	ongoing
Oct 21, 11:30 AM	Sylvan Glen Estates, LLC · Bypass · volume not reported report · notice	ongoing
Oct 20, 7:46 AM	Muskegon County Board of Public Works · SSO · volume not reported report · notice	ongoing
Oct 19, 11:00 AM	Northville Crossing Manufactured Home Community · SSO · 1,000 gallons report · notice	ended
Oct 19, 11:00 AM	Sylvan Glen Estates, LLC · Bypass · volume not reported report · notice	ongoing
Oct 19, 10:06 AM	FSI Millstone Pond Property, LLC · Bypass · volume not reported report · notice	ongoing
Oct 19, 10:00 AM	FSI Millstone Pond Property, LLC · Bypass · volume not reported report · notice	ongoing
Oct 19, 10:00 AM	Village of Otisville · SSO · volume not reported report · notice	ongoing
Oct 18, 6:00 AM	BASF Corporation · SSO · volume not reported report · notice	ongoing
Oct 17, 11:12 AM	Muskegon County Board of Public Works · SSO · volume not reported report · notice	ongoing
Oct 17, 7:00 AM	BASF Corporation · SSO · volume not reported report · notice	ongoing
Oct 16, 3:23 PM	City of Dearborn · Lower River Rouge, River Rouge · CSO · 1.27 million gallons in all map	to Nov 15, 2:23 PM
Oct 16, 3:23 PM	City of Dearborn · Lower River Rouge, River Rouge · CSO · 1.17 million gallons report · notice · map	to Nov 15, 2:23 PM
Oct 16, 3:23 PM	City of Dearborn · Lower River Rouge, River Rouge · CSO · 100,000 gallons report · notice · map	to Nov 15, 2:23 PM
Oct 16, 8:00 AM	Sylvan Glen Estates, LLC · Bypass · volume not reported report · notice	ongoing
Oct 15, 11:50 PM	Great Lakes Water Authority (GLWA) · Detroit River, River Rouge · CSO · volume not reported report · notice · map	to Nov 14, 10:50 PM
Oct 15, 11:30 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:30 PM
Oct 15, 11:15 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:15 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume in each report map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 11:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 10:00 PM
Oct 15, 10:44 PM	City of Sault Ste. Marie · Saint Marys River · Bypass · 217,000 gallons report · notice · map	to Nov 14, 9:44 PM
Oct 15, 8:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume in each report map	to Nov 14, 7:00 PM
Oct 15, 8:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 7:00 PM
Oct 15, 8:00 PM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 7:00 PM
Oct 15, 1:00 PM	Northville Crossing Manufactured Home Community · Bypass · 100 gallons report · notice	ended
Oct 15, 10:00 AM	City of Lansing · Grand River, Red Cedar River · CSO · volume not reported report · notice · map	to Nov 14, 9:00 AM
Oct 14, 6:30 AM	BASF Corporation · SSO · volume not reported report · notice	ongoing
Oct 12, 2:30 PMto 3:30 PM	Oakland County Water Resources Commissioner's Office (sanitary systems) · Gravel area at MH BLT013108 located on MLK Blvd approximately 1,000 ft NE of Woodward Ave. · SSO · 100 gallons report · notice	ended
Oct 8, 3:45 PMto Oct 9, 12:30 PM	Spring Arbor Township/Summit Township · “Not sure where the storm drain goes to” · Air release was leaking on a pressure sewer · SSO · 1,500 gallons report · notice	ended
Oct 7, 2:15 PMto 2:35 PM	Oakland County Water Resources Commissioner's Office (sanitary systems) · Sanitary Sewer Pump Station · SSO · 150 gallons report · notice	ended
Oct 7, 8:30 AMto 10:30 PM	Michigan Department of Natural Resources · Excavation area by aeration tank · Bypass · 100 gallons report · notice	ended
Oct 7, 7:50 AMto 8:30 AM	Livingston County Drain Commissioners Office · 08-04-300-006 - 42.67723142784947,-83.7584055503366 · SSO · 5,600 gallons report · notice	ended
Oct 6, 7:45 PMto 9:30 PM	City of Battle Creek · WASTE WATER TREATMENT PLANT - Area around the Headworks building · SSO · 200 gallons report · notice	ended
Oct 5, 3:07 PMto 3:40 PM	City of Kalamazoo · Manhole located off the North East corner of the building. · SSO · 300 gallons report · notice	ended
Oct 5, 12:51 PMto 12:52 PM	Porter Township · Shavehead Lake · Culvert area between swamp and creek · SSO · 50 gallons report · notice · map	ended
Oct 5, 9:30 AMto 1:00 PM	Western Townships Utilities Authority (WTUA) · median of michigan ave. · SSO · 20 gallons report · notice	ended
Oct 4, 5:00 PM	City of Albion · Kalamazoo River · SSO · 400,000 gallons report · notice · map	ended
Oct 2, 6:00 AMto 10:30 AM	Wayne County · Lower River Rouge · 002 Middlebelt CSO Retention/Treatment Basin · CSO · 480,000 gallons report · notice · map	ended
Oct 2, 5:25 AM	Macomb County Public Works Office · Lake Saint Clair · CSO · 6.3 million gallons report · notice · map	ended
Oct 2, 4:45 AM	Milk River Intercounty Drain Drainage District · Milk River · CSO · 11.1 million gallons report · notice · map	ended
Oct 2, 4:00 AM	Wayne County/River Rouge CSO RTB · River Rouge · 101 · CSO · volume not reported report · notice · map	ongoing
Oct 2, 3:45 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 64.2 million gallons report · notice · map	ended
Oct 2, 3:30 AMto 6:40 AM	City of Dearborn · River Rouge · 017 Rouge Manufacturing Complex Turning Basin · CSO · 6.44 million gallons report · notice · map	ended
Oct 2, 3:30 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 9.5 million gallons report · notice · map	ended
Oct 2, 3:20 AMto 8:43 AM	George W. Kuhn Drain Drainage District · Red Run · 001 001 · CSO · 84.02 million gallons report · notice · map	ended
Oct 2, 3:18 AMto 4:19 AM	Wayne County Drainage Board · Detroit River · 002 Pine St Pump Station · CSO · 3.99 million gallons report · notice · map	ended
Oct 2, 2:58 AMto 3:40 PM	Wayne County Drainage Board · Detroit River · 001 Southgate / Wyandotte Retention Facility · CSO · 48.74 million gallons report · notice · map	ended
Oct 2, 2:50 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 28.35 million gallons report · notice · map	ended
Oct 2, 2:46 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 110,000 gallons report · notice · map	ended
Oct 2, 2:45 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 130.2 million gallons in all map	ended
Oct 2, 2:45 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 130.2 million gallons report · notice · map	ended
Oct 2, 2:45 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 1,000 gallons report · notice · map	ended
Oct 2, 2:43 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 440,000 gallons report · notice · map	ended
Oct 2, 2:40 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 87 million gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:53 AM	Charter Township of Redford · Ashcroft-Sherwood Drain · 45A Orange Lawn/Woodbine intersection · CSO · 840,000 gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Upper River Rouge · U10 Ross and Sarasota extended, south bank · CSO · 10.8 million gallons in all map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Upper River Rouge · U10 Ross and Sarasota extended, south bank · CSO · 300,000 gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Tarabusi Creek · U11 Ross, 800' west of Beech Daly, south bank · CSO · 2 million gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Tarabusi Creek · U9 Graham and Sarasota extended, north bank · CSO · 900,000 gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Bell Branch · U5 Inkster Road, Denby and Keeler extended, east bank · CSO · 400,000 gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Bell Branch · U4 Meadowbrook, east of Inkster Road · CSO · 100,000 gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Bell Branch · U3 south of [house number removed] Mile, east of Meadowbrook, west bank · CSO · 200,000 gallons report · notice · map	ended
Oct 2, 2:37 AMto 4:35 AM	Charter Township of Redford · Ashcroft-Sherwood Drain · U2 West Chicago/Grayfield intersection, east bank · CSO · 6.9 million gallons report · notice · map	ended
Oct 2, 2:33 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 1,000 gallons report · notice · map	ended
Oct 2, 2:31 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 1,000 gallons report · notice · map	ended
Oct 2, 2:20 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 220,000 gallons report · notice · map	ended
Oct 2, 2:15 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 3.9 million gallons report · notice · map	ended
Oct 2, 2:04 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 1,000 gallons report · notice · map	ended
Oct 2, 2:03 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 258.2 million gallons report · notice · map	ended
Oct 2, 2:02 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 1,000 gallons report · notice · map	ended
Oct 2, 2:00 AMto 11:31 AM	Wayne County · Lower River Rouge · 010 west of Beech Daly Road, Meadowdale Storm Sewer (Yale) · CSO · 2.3 million gallons report · notice · map	ended
Oct 2, 1:59 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 3.33 million gallons report · notice · map	ended
Oct 2, 1:57 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 90.68 million gallons in all map	ended
Oct 2, 1:57 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 90.68 million gallons report · notice · map	ended
Oct 2, 1:57 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 1,000 gallons report · notice · map	ended
Oct 2, 1:56 AM	Great Lakes Water Authority (GLWA) · River Rouge, Detroit River, River Rouge · CSO · 1,000 gallons report · notice · map	ended

Showing the newest 100 of 58,760 reports; all reports: by year · CSV by year

All reports in Michigan by year

2026 (1,678 records) · 2025 (1,493 records) · 2024 (1,935 records) · 2023 (1,904 records) · 2022 (1,626 records) · 2021 (2,150 records) · 2020 (2,140 records) · 2019 (2,294 records) · 2018 (1,983 records) · 2017 (1,737 records) · 2016 (1,822 records) · 2015 (1,549 records) · 2014 (1,938 records) · 2013 (2,014 records) · 2012 (1,468 records) · 2011 (2,575 records) · 2010 (1,862 records) · 2009 (2,432 records) · 2008 (2,296 records) · 2007 (2,230 records) · 2006 (5,018 records) · 2005 (3,605 records) · 2004 (3,172 records) · 2003 (2,405 records) · 2002 (2,106 records) · 2001 (3,328 records)

All of Michigan's reports as CSV, one file per year: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · 2007 · 2006 · 2005 · 2004 · 2003 · 2002 · 2001

By town

Towns along the waters we track and the towns sewer operators serve, A to Z.

941 towns; the list appears as you scroll.

Other states we track: Connecticut, District of Columbia, Florida, Georgia, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, Vermont, Virginia.

Reported sewage discharges in Michigan

Data and its limits

What stands in the way

Public-notice channels

Required by law: 1696

Required by a permit: 61

Voluntary: 8

Discharge or advisory reported 5 waters

Caution 28 waters

End not confirmed 2 waters

No current status shown 445 waters

Sewer operators

What this page covers

Post-discharge periods and their sources

Sources checked automatically

The last 90 days in Michigan

Reported discharges in Michigan over time

Reported discharges per month

Hours with a discharge or advisory status per month

Days with a reported discharge per month

Reported discharges per year, 2000 to 2026

Reported volume per year

Hours with a discharge or advisory status per year

Share of the May to October season with a discharge or advisory status

Reported discharges by calendar month, all years

Reported discharges by wastewater outlet

Reports in Michigan, newest first

All reports in Michigan by year

By town