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Michigan / Sewer operators /

GM Flint Complex

Sewer utility · Michigan

Federal wastewater discharge permit (NPDES)
3112a-1040
Wastewater outlets
None in our records. EPA's and the state's outlet records list no outlet for permit 3112a-1040, and its overflow reports give no locations.
Waters listed as receiving wastewater
not recorded
Tracked waters
none
Discharge records counted
10 records · latest
Total reported volume in these records
841,264 gallons across the 9 records that give a volume (1 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 GM Flint Complex or the state publishes its notices (check them for an alert sign-up):

Its public-notice channels

Source: GM Flint Complex'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.

EPA's and the state's outlet records list no outlet for permit 3112a-1040, and its overflow reports give no locations.

Reports and advisories

Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.

Reports linked to GM Flint Complex, newest first
WhenReportStatus
to 8:25 AMWater not mapped · East Gravel Area Between C and B Dock at Flint Engine Operations - East Gravel Area Between C and B Dock · SSO (earlier version) · 2 gallons in all ended
to 1:22 PMWater not mapped · Flint Engine Operations south sanitary lift station - Road way south of Facitlity · SSO · 3 gallons report · noticeended
to 12:00 PMWater not mapped · Shipping and Receiving Dock F · SSO · 10 gallons report · noticeended
to 12:00 PMWater not mapped · South employee parking lot. · SSO · 2 gallons report · noticeended
to 3:00 PMWater not mapped · Flint Engine Operations Dock E - Road way on west side of Facility · SSO · 10 gallons report · noticeended
to 10:30 AMWater not mapped · Precision Haul Away Yard - Asphalt storage lot for construction materials. · SSO · 15 gallons report · noticeended
to Mar 29 ’23, 7:00 AMWater not mapped · Precision Haul Away Yard · SSO · 10 gallons report · noticeended
to 12:45 PMWater not mapped · 003 Swartz Creek - storm sewer outfall · SSO · 50 gallons report · noticeended
to Dec 11 ’18, 11:20 AM“Swartz Creek” · 003 Swartz Creek · SSO · “< 275 gallons” report · noticeended
to Mar 14 ’24, 3:30 AM“Call Drain” · 001 Flint Metal Center Oil Water Separator · SSO · 841,163 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: 2025 (5 from GM Flint Complex) · 2024 (2 from GM Flint Complex) · 2023 (1 from GM Flint Complex) · 2019 (1 from GM Flint Complex) · 2018 (2 from GM Flint Complex)

Reported discharges over time

  • Discharges reported by GM Flint Complex, last 12 months0December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
  • Days with a discharge reported by GM Flint Complex, 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 GM Flint Complex'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 (GM Flint Complex)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. Treatment bypass: wastewater skips one or more treatment steps. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater.

Reported discharges per month

7 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

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

10 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 9 reports that gave a volume as a number (1 did not).

1 of 10 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

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

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 10, 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