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Michigan / Sewer operators /

City of Grand Rapids

Sewer utility with combined sewers · Michigan · Grand Rapids

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.

Solid dots mark combined sewer outfalls. 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)
MI0026069, 3112a-0387
Wastewater outlets
1 combined sewer outfall and 2 treatment plant outfalls listed by EPA or state agencies; 2 places named in its own overflow reports (provisional locations) · List
Waters listed as receiving wastewater
Grand River
Tracked waters
Grand River, MI, Indian Mill Creek, MI, Plaster Creek, MI, Thornapple River, MI, Carrier Creek, MI, Reeds Lake, MI, Sand Creek, MI
Discharge records counted
745 records · latest
Total reported volume in these records
3,959,722,274 gallons across the 735 records that give a volume (10 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 City of Grand Rapids or the state publishes its notices (check them for an alert sign-up):

Its public-notice channels

Source: City of Grand Rapids'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

Rain and discharges

The NOAA MRMS radar-only rainfall estimate for the 24 hours to the latest hour, read every hour at each outfall from the radar grid. We show a caution when the rain reaches the amount below and no discharge report has arrived.

Threshold
0.1 in of rain in 24 hours (site default: This site's default: 0.1 inch of rain in 24 hours at a combined sewer outfall, applied where the state publishes no rain trigger of its own)
Radar now
4.3 in in the 24 hours to Nov 4, 2026, 7:00 PM EST
Forecast
0.05 in forecast in the next 24 hours (NWS forecast issued Nov 4, 2026, 8:03 PM EST)
Status
Discharge possible: heavy rain, no report received

Source: NOAA National Weather Service, MRMS radar-only rainfall estimate, valid Nov 4, 2026, 7:00 PM EST, retrieved 2026-11-05 01:19 UTC; threshold: site default; rule: How it works, discharge likely or possible.

Wastewater outlets

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

1 combined sewer outfall and 2 treatment plant outfalls listed by EPA or state agencies; 2 places named in its own overflow reports (provisional locations).

Combined sewer outfalls

1 outfall

Source: U.S. Environmental Protection Agency (EPA) national combined sewer outfall inventory (ECHO) and state outfall layers. Open or closed as EPA's inventory lists it. DirtyWaterWatch links outlets to waters using permit numbers, locations and names.

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.

Places named in overflow reports (provisional)

2 places · 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 Jun 27, 2018 · confidence medium · no water record yet
  • Reported place · 1 overflow report, latest Aug 23, 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

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. Treatment bypass: wastewater skips one or more treatment steps.

Reports linked to City of Grand Rapids, newest first
WhenReportStatus
to 11:26 PMWater not mapped · Located in woods near [house number removed] Brookshire DR. SE · SSO · 250 gallons report · noticeended
to 12:20 PMGrand River · Manhole · SSO · 75 gallons report · notice · mapended
to 4:45 PMGrand River · Easement next to golf course and residential housing · SSO · 50 gallons report · notice · mapended
to Apr 20, 9:45 PMGrand River · Retention Treatment Basin · CSO · 19.6 million gallons report · notice · mapended
to 12:09 PMGrand River · Blairview Pkwy and Augusta Hills SE · SSO · 80 gallons report · notice · mapended
Grand River · expansion joint of concrete basin · SSO · volume not reported report · notice · mapongoing
to Nov 30 ’25, 12:15 AMIndian Mill Creek · Wooded area - Wood/Creek · SSO · 500 gallons report · notice · mapended
to 10:30 AMGrand River · Business/Right of way · SSO · 180 gallons report · notice · mapended
to 1:00 PMWater not mapped · Collindale lift Station - Collindale LS parking area · SSO · 60 gallons in all ended
to 9:00 PMWater not mapped · Digested sludge transfer tank - digested sludge storage tank - area around tank - Grass, Rocks and cement · Bypass · 1,000 gallons report · noticeended
to 10:30 PMGrand River · CW screening · Bypass · 100 gallons report · notice · mapended
to 8:25 PMGrand River · Wooded easement · SSO · 5 gallons report · notice · mapended
to 1:30 PMWater not mapped · [house number removed] Market Ave - Wastewater plant · SSO · 500 gallons report · noticeended
to 1:30 AMWater not mapped · Digester sludge storage · SSO · 1,500 gallons report · noticeended
Water not mapped · Lift Station at above address · SSO · 55 gallons report · noticeended
to 4:30 PMWater not mapped · Paved Road - Business · SSO · 500 gallons report · noticeended
to 3:10 PMWater not mapped · Phosphorus recovery facility - [house number removed] market ave S.W . Wastewater plant grounds · Bypass · 20 gallons report · noticeended
to 3:00 PMWater not mapped · [house number removed] S. Division Manhole 3819 - manhole in street · SSO · 350 gallons report · noticeended
to Nov 14 ’24, 1:15 PMWater not mapped · City of Grand Rapids WRRF - NE corner of West drive · SSO · 280,000 gallons report · noticeended
to 12:45 PMWater not mapped · 28th/Kalamazoo Ave - Street · SSO · 300 gallons report · noticeended
to 3:29 PMWater not mapped · [house number removed] Eastern Ave SE - Repair trench · SSO · 20 gallons report · noticeended
to 2:52 PMPlaster Creek · Ken O Sha Park - Public Park · SSO · 2,000 gallons report · notice · mapended
to Jul 3 ’24, 12:55 PMWater not mapped · Ash Lagoon - West side of [house number removed] Market SW ash lagoon area · Bypass · 140,000 gallons report · noticeended
to 4:35 AMWater not mapped · [house number removed] Market Ave - Grassy area near Sludge thickening building · Bypass (earlier version) · 2,000 gallons in all ended

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 26 records of 746 records.See them all with filters.

All reports in Michigan by year: 2026 (6 from City of Grand Rapids) · 2025 (11 from City of Grand Rapids) · 2024 (15 from City of Grand Rapids) · 2023 (4 from City of Grand Rapids) · 2022 (5 from City of Grand Rapids) · 2021 (7 from City of Grand Rapids) · 2020 (6 from City of Grand Rapids) · 2019 (7 from City of Grand Rapids) · 2018 (12 from City of Grand Rapids) · 2017 (12 from City of Grand Rapids) · 2016 (12 from City of Grand Rapids) · 2015 (5 from City of Grand Rapids) · 2014 (4 from City of Grand Rapids) · 2013 (9 from City of Grand Rapids) · 2012 (13 from City of Grand Rapids) · 2011 (21 from City of Grand Rapids) · 2010 (24 from City of Grand Rapids) · 2009 (48 from City of Grand Rapids) · 2008 (53 from City of Grand Rapids) · 2007 (35 from City of Grand Rapids) · 2006 (70 from City of Grand Rapids) · 2005 (65 from City of Grand Rapids) · 2004 (81 from City of Grand Rapids) · 2003 (62 from City of Grand Rapids) · 2002 (62 from City of Grand Rapids) · 2001 (97 from City of Grand Rapids)

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 City of Grand Rapids, last 12 months6December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by City of Grand Rapids, last 12 months10December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status from City of Grand Rapids's reports, last 12 months270December 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 (City of Grand Rapids)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.

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

Reported discharges per month

40 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

14 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. 1 discharge reported to last more than 31 days is counted as 31 days. 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

745 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 735 reports that gave a volume as a number (10 did not).

10 of 745 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

14 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. 1 discharge reported to last more than 31 days is counted as 31 days. 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

14 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. 1 discharge reported to last more than 31 days is counted as 31 days. 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 179, 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