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Michigan / Sewer operators /

Ypsilanti Community Utilities Authority

Sewer operator · Michigan · Ypsilanti

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.

Ringed dots mark treatment plant outfalls. Small hollow diamonds mark places named in its overflow reports (provisional). Square boat markers mark boat launches listed by OpenBoatLaunch.

Federal wastewater discharge permit (NPDES)
MI0042676
Wastewater outlets
3 treatment plant outfalls listed by EPA or state agencies; 1 place named in its own overflow reports (provisional locations) · List
Waters listed as receiving wastewater
Belleville Lake; Lower Rouge River
Tracked waters
Belleville Lake, MI, Lower River Rouge, MI, Willow Run, MI
Discharge records counted
102 records · latest
Total reported volume in these records
15,468,991,393 gallons across the 96 records that give a volume (6 without one)

These totals reflect the records we track. Missing volumes and gaps in reporting limit comparisons between operators.

Sources: EPA ECHO and the operator and state sources linked below. Counts use the discharge records on this page. Updated 2026-11-05 01:25 UTC.

Public notices and alerts

Pages where Ypsilanti Community Utilities Authority or the state publishes its notices (check them for an alert sign-up):

Its public-notice channels

Source: Ypsilanti Community Utilities Authority's public notice and alert pages and the state's notification records; DirtyWaterWatch register of public-notice channels and its page monitor.

Report a missing notice or error

Wastewater outlets

Outfall: a pipe or outlet where wastewater enters a water body.

3 treatment plant outfalls listed by EPA or state agencies; 1 place named in its own overflow reports (provisional locations).

Treatment plant outfalls

3 outfalls

Source: U.S. Environmental Protection Agency (EPA) permit records (ICIS-NPDES permitted features): where a treatment plant’s permitted discharge leaves. No national source says whether a plant outfall is open or closed.

Places named in overflow reports (provisional)

1 place · 1 not on the map (reports say the sewage reached no water)

Provisional location from overflow reports. Where the operator's own reports put an overflow: a manhole, pump station or plant. Not an outfall listed in a permit.

  • Reported place · 1 overflow report, latest Apr 20, 2007 · confidence medium · no water record yet · not on the map: its reports say the sewage did not reach a water

Source: the operator's own overflow reports to the state. DirtyWaterWatch groups reports within 50 metres into one place and finds the water below it with U.S. Geological Survey river maps (NLDI, NHDPlus). Not a permitted outfall; provisional until an official outfall record exists.

Reports and advisories

Treatment bypass: wastewater skips one or more treatment steps. 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.

Reports linked to Ypsilanti Community Utilities Authority, newest first
WhenReportStatus
Lower River Rouge · Lower Rouge River · Bypass · volume in each report mapongoing
Water not mapped · Paved Parking Lot · SSO · 10 gallons report · noticeongoing
to 1:20 PMWater not mapped · YCUA Regional WWTP - Scum Well - Discharge area is the scum well at YCUA WWTP · Bypass · 50 gallons report · noticeended
to 7:46 PMWater not mapped · Ypsilanti Community Utilities Authority Wastewater Treatment Plant - YCUA Influent Well · Bypass · 129,789 gallons report · noticeended
to 8:40 AMWater not mapped · West Right of Way of Watson Avenue, approximately 1/8 mile North of State Road, Ypsilanti, MI 48198 · SSO · 5 gallons report · noticeended
to 10:00 AM“Huron River at Rawsonville Road in Charter Township of Ypsilanti, Michigan” · SSO from South Vault- South side of Snow Road Pump Station - South Vault- Snow Road Pump Station, [house number removed] Snow Road, Ypsilanti, MI · SSO · 419,295 gallons report · noticeended
to Aug 25 ’23, 12:35 AM“Huron River” · South vault- Snow Road Pump Station - South Vault - South of Huron River, Snow Road Pump Station · SSO · 938,263 gallons report · noticeended
to 7:19 AM“Willow Creek” · Willow Run Pump Station · SSO · 125,000 gallons report · noticeended
to 6:00 AM“Beyer Drain” · Emerick Pump Station · SSO · 1,300 gallons report · noticeended
to 1:03 PM“Willow Creek in Van Buren Township” · YCUA Regional WWTP - YCUA Regional WWTP- Aeration Tanks · Bypass · 18,000 gallons report · noticeended
to 11:15 AMWater not mapped · Watson Street ROW, approximately 1/8 mile North of State Street in Section 13 of Charter Township of Ypsilanti, Washtenaw County, MI - Watson Street west right of way, approximately 1/8 mile North of State Street in Section 13 of Charter Township of Ypsilanti, Washtenaw County, MI · SSO · 800 gallons report · noticeended
to 9:52 AM“Washtenaw County Drain in State Road, Ypsilanti, MI” · YCUA WWTP East Backwash Holding Tank - YCUA WWTP - East Backwash Holding Tank · Bypass · 3,550 gallons report · noticeended
Lower River Rouge · Outfall 003- Lower Rouge River - Outfall 003 located at Geddes and Beck Roads in Canton Township, Wayne County, MI · Bypass · 712,459 gallons report · notice · mapended
to 8:57 AMLower River Rouge · 003 Outfall 003 discharges to Lower Rouge River · Bypass · 172,082 gallons report · notice · mapended
to Feb 14 ’22, 7:30 AM“Huron River in Section 24, Charter Township of Ypsilanti” · Snow Road Pump Station, [house number removed] Snow Road, Ypsilanti, Washtenaw County, MI - Snow Road Pump Station · SSO · 1.2 million gallons report · noticeended
to 4:54 PMWater not mapped · A sanitary sewer manhole in Section 16, Charter Township of Ypsilanti to a Road side ditch - south of E. Bound I-94, approximately 1/10 mile west of Grove Road, Ypsilanti, MI - A sanitary sewer manhole in Section 16, Charter Township of Ypsilanti to a Road side ditch - south of E. Bound I-94, approximately 1/10 mile west of Grove Road in Ypsilanti, Michigan · SSO · 60 gallons report · noticeended
to May 21 ’20, 2:45 AMLower River Rouge · Lower Rouge River - Lower Rouge River located at Geddess and Beck Roads in Canton Township, Wayne County, Michigan · Bypass · 24.84 million gallons report · notice · mapended
to Apr 1 ’20, 5:52 AMLower River Rouge · Lower Rouge River - Lower Rouge River located at Geddes and Beck Roads in Canton Township, Wayne County, MI · Bypass · 35.74 million gallons report · notice · mapended
to Jan 15 ’20, 8:43 PM“Lower Branch of Rouge River located at Geddes and Beck Roads in Canton Township, Wayne County” · Lower Rouge River - Outfall 003 discharges - Lower Branch of Rouge River located at Geddes and Beck Roads in Canton Township, Wayne County · Bypass · 112.12 million gallons report · noticeended
to 8:30 AMWater not mapped · Primary Solids Storage Tank - Primary Solids Storage Tank #1 · SSO · 12 gallons report · noticeended
to 1:55 PMWater not mapped · Green belt area, and a storm sewer catchbasin - Green belt area, and storm sewer catchbasin · SSO · 60 gallons report · noticeended
to 9:15 AM“Huron River” · Snow Road - South bank of Huron River, west of Rawsonville Road in Section 24 of Charter Township of Ypsilanti, MI · SSO · 1,000 gallons report · noticeended
to May 5 ’19, 11:15 AM“Ditches along Martz Road Right of Way” · Adjacent Ground Surface and nearby ditches along Martz Road, in Charter Township of Ypsilanti, MI - Ground Surface and ditches in the Martz ROW, North Branch of Big Swan Creek · SSO · 6 million gallons report · noticeended
to May 4 ’19, 11:30 AM“Lower Branch of Rouge River, Canton Township, Wayne County, Michigan” · Lower Branch of Rouge River - Lower Branch of Rouge River at Geddes and Beck Road in Canton Township, Wayne County, Michigan · Bypass · 112.96 million gallons report · noticeended

Sources: EGLE MiEnviro CSO/SSO List, retrieved 2026-11-05 01:07 UTC. A report's record id and times show when you hover or focus its "report" link.

Download these reports as CSV

Showing the latest 25 records of 107 records.See them all with filters.

All reports in Michigan by year: 2026 (3 from Ypsilanti Community Utilities Authority) · 2025 (2 from Ypsilanti Community Utilities Authority) · 2024 (2 from Ypsilanti Community Utilities Authority) · 2023 (5 from Ypsilanti Community Utilities Authority) · 2022 (4 from Ypsilanti Community Utilities Authority) · 2020 (5 from Ypsilanti Community Utilities Authority) · 2019 (8 from Ypsilanti Community Utilities Authority) · 2018 (6 from Ypsilanti Community Utilities Authority) · 2017 (2 from Ypsilanti Community Utilities Authority) · 2016 (4 from Ypsilanti Community Utilities Authority) · 2015 (3 from Ypsilanti Community Utilities Authority) · 2014 (1 from Ypsilanti Community Utilities Authority) · 2013 (1 from Ypsilanti Community Utilities Authority) · 2012 (2 from Ypsilanti Community Utilities Authority) · 2011 (1 from Ypsilanti Community Utilities Authority) · 2010 (3 from Ypsilanti Community Utilities Authority) · 2009 (5 from Ypsilanti Community Utilities Authority) · 2008 (3 from Ypsilanti Community Utilities Authority) · 2007 (4 from Ypsilanti Community Utilities Authority) · 2006 (1 from Ypsilanti Community Utilities Authority) · 2005 (4 from Ypsilanti Community Utilities Authority) · 2004 (6 from Ypsilanti Community Utilities Authority) · 2003 (6 from Ypsilanti Community Utilities Authority) · 2002 (8 from Ypsilanti Community Utilities Authority) · 2001 (18 from Ypsilanti Community Utilities Authority)

Other sewer operators on these waters

The last 90 days

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.
  • End not confirmed: to
    1 report: Lower River Rouge 1
    Show records

    The records are also in the report table on this page.

  • End not confirmed: to
    1 report: Lower River Rouge 1
    Show records

    The records are also in the report table on this page.

  • Discharge or advisory reported: to
    2 reports: Lower River Rouge 2
    Show records

    The records are also in the report table on this page.

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

Reported discharges over time

  • Discharges reported by Ypsilanti Community Utilities Authority, last 12 months3December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by Ypsilanti Community Utilities Authority, last 12 months2December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status from Ypsilanti Community Utilities Authority's reports, last 12 months336December 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 (Ypsilanti Community Utilities Authority)7.4%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.

Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater.

Reported discharges per month

16 reported discharges, January 2022 to November 2026.

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

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2022 to November 4, 2026.

Show table

Hours with a discharge or advisory status per month

Hours when a water had a discharge or advisory status from this sewer operator's reports, under DirtyWaterWatch rules.

  • Discharge or advisory reported

7 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. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

Show table

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.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2022 to November 4, 2026.

Show table

Reported discharges per year, 2001 to 2026

102 reported discharges, 2001 to 2026.

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

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

Show table

Reported volume per year

Gallons (axis: K thousand, M million), summed from the 95 reports that gave a volume as a number (7 did not).

7 of 102 discharge reports gave no volume as a number; only numbers are summed. 1 report gives more than 5 billion gallons for a single discharge, which looks like an entry error; it is not summed.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

Show table

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

7 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. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

Show table

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

7 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. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

Show table

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.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

Show table

Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 78, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.

Source: mi-egle-mienviro-cso-sso-list. Records cover January 1, 2001 to November 4, 2026.

Show table
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.

  • mi-egle-mienviro-cso-sso-list: records from January 1, 2001 to the latest update