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Michigan / Sewer operators /

Bay County Department of Water and Sewer

Sewer operator · Michigan · Bay City

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. Square boat markers mark boat launches listed by OpenBoatLaunch.

Federal wastewater discharge permit (NPDES)
MI0042439
Wastewater outlets
2 treatment plant outfalls listed by EPA or state agencies; no combined sewer outfall is listed · List
Waters listed as receiving wastewater
Saginaw River
Tracked waters
Saginaw River, MI, West Bay, MI, Saginaw Bay, MI, Kawkawlin River, MI
Discharge records counted
43 records · latest
Total reported volume in these records
76,714,010 gallons across the 41 records that give a volume (2 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 Bay County Department of Water and Sewer or the state publishes its notices (check them for an alert sign-up):

Its public-notice channels

Source: Bay County Department of Water and Sewer'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.

2 treatment plant outfalls listed by EPA or state agencies; no combined sewer outfall is listed.

Treatment plant outfalls

2 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.

Reports and advisories

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.

Reports linked to Bay County Department of Water and Sewer, newest first
WhenReportStatus
to 4:00 PMWater not mapped · Homeowner's backyard · SSO · 390 gallons report · noticeended
to 9:30 AM“Gregory Drain” · Private Residence Address - On M-13 just north of Anderson Road near [house number removed] N Huron Road (Ricker's Market). · SSO · 3,600 gallons report · noticeended
to 1:10 PMWater not mapped · A quarter mile south of Erickson Rd and M-13 - On the west side of M-13 approximately a quarter mile south of the intersection of Erickson Road and M-13 (Huron Road). · SSO · 9,000 gallons report · noticeended
to 1:00 PMWater not mapped · M-13 North of Erickson Rd - Just North of the M-13/Erickson Road intersection on the west side of M-13 in Fraser Township. · SSO · 4,800 gallons report · noticeended
Water not mapped · Lift Station #23 - [house number removed] Berthiaume Dr. Bay City, MI - The ground in the immediate area of Lift Station #23 · SSO · 80 gallons report · noticeended
to 4:00 PMWater not mapped · Broken force main on M-13 just south of Coggins Rd - Broken force main on the west side M-13 just south of the Roadside Inn parking area near the corner of Coggins Rd · SSO · 2,000 gallons report · noticeended
to 9:10 AMWest Bay · West Bay County Regional WWTP - The area around the primary tanks, leading to the storm sewer and storm pond. · SSO · 54,000 gallons report · notice · mapended
to 3:30 PM“Tebo Drain” · Tebo Drain - Tebo-Erickson Drain as it crosses under M-13 · SSO · 1,000 gallons report · noticeended
to May 19 ’20, 9:00 AMSaginaw Bay · Sanitary Sewer Manhole - Manhole nearest to [house number removed] E Linwood Rd Linwood, MI · SSO · 22,800 gallons report · notice · mapended
to May 19 ’20, 4:45 AMWater not mapped · Sanitary Sewer Manhole - Sanitary Sewer Manhole near [house number removed] S Linwood Beach Rd · SSO · 200 gallons report · noticeended
to 1:05 PMSaginaw River · 001 Storm Water Outfall · Bypass · 20,000 gallons report · notice · mapended
to Jun 25 ’17, 3:00 AMSaginaw River · Equalization Basin - Basin at WWTP · SSO · 7.02 million gallons report · notice · mapended
to Apr 15 ’15, 4:30 PM“None” · Private Residence Address - Force Main Leak · SSO · 370 gallons report · noticeended
to 1:20 PM“None” · NE Corner of M13 and Erickson Rd - Air Relief Structure · SSO · 900 gallons report · noticeended
to 10:30 PM“Storm drain” · Private Residence Address - Pump Station · SSO · 72,000 gallons report · noticeended
to 3:00 AMSaginaw River · Wastewater treatment plant grounds - near Primary Treatment Building · SSO · 8,000 gallons report · notice · mapended
to Apr 20 ’13, 10:00 AMSaginaw River · Wastewater treatment plant grounds - near Primary Treatment Building · SSO · 31.43 million gallons report · notice · mapended
to Aug 11 ’12, 1:00 AMSaginaw River · Wastewater treatment plant grounds - near Primary Treatment Building · SSO · 1.48 million gallons report · notice · mapended
to 11:00 AM“none” · Pump Station #3 · SSO · 750 gallons report · noticeended
to Apr 27 ’09, 3:45 AMSaginaw River · Wastewater treatment plant grounds - near Primary Treatment Building · SSO · 9.1 million gallons report · notice · mapended
to 5:25 PMSaginaw River · Wastewater treatment plant grounds - near Primary Treatment Building · SSO · 1.59 million gallons report · notice · mapended
to Dec 29 ’08, 12:20 AMSaginaw River · Wastewater treatment plant grounds - near Primary Treatment Building · SSO · 9.25 million gallons report · notice · mapended
to 6:52 AMSaginaw River · Equalization Basin - Basin at WWTP · SSO · 1.97 million gallons report · notice · mapended
to 7:10 PMSaginaw River · Wastewater treatment plant grounds - near Primary Treatment Building · SSO · 3.28 million gallons report · notice · mapended
to 4:30 PMWater not mapped · WWTP grounds/Plant site - grit chamber · SSO · 50,000 gallons report · noticeended

Sources: EGLE MiEnviro CSO/SSO List, retrieved 2026-11-04 15:09 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 43 records.See them all with filters.

All reports in Michigan by year: 2024 (3 from Bay County Department of Water and Sewer) · 2023 (1 from Bay County Department of Water and Sewer) · 2022 (2 from Bay County Department of Water and Sewer) · 2021 (2 from Bay County Department of Water and Sewer) · 2020 (3 from Bay County Department of Water and Sewer) · 2017 (1 from Bay County Department of Water and Sewer) · 2015 (1 from Bay County Department of Water and Sewer) · 2014 (3 from Bay County Department of Water and Sewer) · 2013 (1 from Bay County Department of Water and Sewer) · 2012 (1 from Bay County Department of Water and Sewer) · 2010 (1 from Bay County Department of Water and Sewer) · 2009 (2 from Bay County Department of Water and Sewer) · 2008 (3 from Bay County Department of Water and Sewer) · 2006 (6 from Bay County Department of Water and Sewer) · 2005 (4 from Bay County Department of Water and Sewer) · 2004 (2 from Bay County Department of Water and Sewer) · 2003 (1 from Bay County Department of Water and Sewer) · 2002 (6 from Bay County Department of Water and Sewer)

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.

No discharge, advisory or caution periods are shown for the waters this sewer operator's reports were placed on in this time span. Check downstream stretches and source coverage.

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 Bay County Department of Water and Sewer, last 12 months0December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by Bay County Department of Water and Sewer, last 12 months0December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status from Bay County Department of Water and Sewer's reports, last 12 months0December 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 (Bay County Department of Water and Sewer)0.0%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. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater.

Reported discharges per month

6 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.

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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

2 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.

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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.

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Reported discharges per year, 2001 to 2026

43 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.

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Reported volume per year

Gallons (axis: K thousand, M million), summed from the 41 reports that gave a volume as a number (2 did not).

2 of 43 discharge reports gave no volume as a number; only numbers are summed.

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

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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

2 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.

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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

2 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.

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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.

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Reported discharges by wastewater outlet

Wastewater outlets with the most tracked discharge records: 10 of 28, 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.

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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