Clean Water Act discharge permit · NPDES MI0036072
SOUTHGATE-WYANDOTTE CSO RTF, Wyandotte, MI: NPDES MI0036072 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
SOUTHGATE-WYANDOTTE CSO RTF, held by Southgate-Wyandotte Relief Drains Drainage Board, holds NPDES permit MI0036072, which discharges to Detroit River. EPA’s file records it issued December 27, 2010 and expiring October 1, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOUTHGATE-WYANDOTTE CSO RTF |
|---|---|
| Permittee as filed | Southgate-Wyandotte Relief Drains Drainage Board |
| NPDES ID | MI0036072 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 27, 2010 |
| Expiration date | October 1, 2015 |
| Issuing agency | State |
| Address | Wyandotte, MI 48192 |
| Receiving water | Detroit River |
| Subwatershed | Huntington Creek-Frontal Lake Erie (HUC 040900040503) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 9Pollutants on file
- 9Under a numeric limit
- 9With a violation of any kind
- 1With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Coliform, fecal general | 2 | 114 | 51 | May 31, 2026 | 1,400% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 125 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 121 | 0 | ||
| Solids, total suspended | 4 | 120 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 120 | 0 | ||
| Phosphorus, total [as P] | 4 | 120 | 0 | ||
| pH | 2 | 62 | 0 | ||
| Chlorine, total residual | 1 | 36 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 27 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 11Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 28, 2022 | Management Practice Violations - Failure to Maintain Records | ST6 |
| November 28, 2022 | Management Practice Violations - Failure to Maintain Records | ST6 |
| July 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 30, 2021 | WW SSO - Failure to Maintain Records or Meet Record Keeping Requirements | ST6 |
| September 30, 2021 | Failure to comply with recordkeeping requirements - SSS or discharges from SSS [40 CFR 122.41(j)] | ST6 |
| July 27, 2020 | WW SSO - Discharge to Waters | ST6 |
| July 27, 2020 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| November 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.