DirtyWaterWatch Public waters. Public record.

Michigan / Sewer operators /

Allendale Charter Township

Sewer operator · Michigan · Allendale

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)
MI0057679
Wastewater outlets
1 treatment plant outfall listed by EPA or state agencies; no combined sewer outfall is listed · List
Waters listed as receiving wastewater
not recorded
Tracked waters
Grand River, MI, Ottawa Creek, MI
Discharge records counted
19 records · latest
Total reported volume in these records
2,205,157 gallons across the 19 records that give a volume

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 Allendale Charter Township or the state publishes its notices (check them for an alert sign-up):

Its public-notice channels

Source: Allendale Charter Township'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.

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

Treatment plant outfalls

1 outfall

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 Allendale Charter Township, newest first
WhenReportStatus
to 4:17 PMWater not mapped · Entrance to Allendale WRRF - 40th Ave Road · SSO · 150 gallons in all ended
to 3:00 PMWater not mapped · Allendale WRRF - Driveway · SSO · 200 gallons report · noticeended
to 12:55 PMWater not mapped · WRRF Driveway - Driveway with Base Asphalt only · SSO · 50 gallons report · noticeended
to 1:45 PMWater not mapped · Behind a mobile home in Knollwood Manufactured Home Community · SSO · 500 gallons report · noticeended
to Mar 24, 9:09 AMGrand River, Ottawa Creek · Knollwood Lateral Manhole - Final manhole structure on the Knollwood lateral connecting to the North South Trunk line · SSO · 1.38 million gallons report · notice · mapended
to 3:10 PMWater not mapped · South Anaerobic Digester - concrete and asphalt surrounding the digester · Bypass · 15 gallons report · noticeended
to Feb 19, 6:30 AMGrand River, Ottawa Creek · Allendale Water Resource Recovery Facility - Return flow manhole by the UV building · Bypass · 300,000 gallons report · notice · mapended
to 1:45 PMWater not mapped · TWAS Tank - Thickened waste activated sludge storage · Bypass · 2 gallons report · noticeended
to 9:20 AMWater not mapped · Splitter Box - Receives wasted aerobic granular sludge and send to sludge buffer tanks · SSO · 15 gallons report · noticeended
to 7:00 PMWater not mapped · Allendale water Resource Recovery Faciltiy - Sludge Buffer cut over · SSO · 100 gallons report · noticeended
to 6:00 PMWater not mapped · Headworks Tie in and sludge buffer tie in - Excavated site for tie ins with sumps in place to capture escaping sewage · SSO · 300 gallons report · noticeended
to 11:45 AMWater not mapped · Allendale WRRF - In the construction site near the chlorination chamber · Bypass · 1,000 gallons report · noticeended
to 10:00 AMWater not mapped · Lake Michigan Drive - Center Boulevard of divided roadway · SSO · 100 gallons report · noticeended
to 2:00 PMWater not mapped · Driveway - Driveway along headworks building · SSO · 5 gallons report · noticeended
to 10:26 AMWater not mapped · Splitter Box - Sandy area inside construction zone · SSO · 2,000 gallons report · noticeended
to 11:31 AMWater not mapped · Driveway/Dumpster Pad - Impervious surface · SSO · 90 gallons report · noticeended
to 11:05 AMWater not mapped · driveway by headworks - paved driveway · SSO · 30 gallons report · noticeended
to Aug 9 ’24, 12:15 PMWater not mapped · Chlorine Chamber - A 6 foot wide 12 foot deep structure where chlorine tablets are added for disinfection · Bypass · 525,600 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

All reports in Michigan by year: 2026 (12 from Allendale Charter Township) · 2025 (5 from Allendale Charter Township) · 2024 (2 from Allendale Charter Township)

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 Allendale Charter Township, last 12 months12December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by Allendale Charter Township, last 12 months15December 2025 to November 2026A day counts once however many discharges were under way on it.
  • Hours with a discharge or advisory status from Allendale Charter Township's reports, last 12 months150December 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 (Allendale Charter Township)0.2%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

19 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

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

19 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 19 reports that gave a volume as a number.

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

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

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 19, 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