Clean Water Act discharge permit · NPDES MIG640222
GLWA-WATER WORKS PARK II WTP, Detroit, MI: NPDES MIG640222 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
GLWA-WATER WORKS PARK II WTP, held by City of Detroit Water and Sewerage Department and Great Lakes Water Authority, holds NPDES permit MIG640222, which discharges to Detroit River. EPA’s file records it issued October 6, 2016 and expiring April 1, 2020. 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 | GLWA-WATER WORKS PARK II WTP |
|---|---|
| Permittee as filed | City of Detroit Water and Sewerage Department and Great Lakes Water Authority |
| NPDES ID | MIG640222 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 6, 2016 |
| Expiration date | April 1, 2020 |
| Issuing agency | State |
| Address | Detroit, MI 48021 |
| Receiving water | Detroit River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Clinton River Spillway-Frontal Lake Saint Clair (HUC 040900020200) |
| NAICS | 221310 – Water Supply and Irrigation Systems |
| SIC | 4941 – Water Supply |
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
- 4Pollutants on file
- 0Under a numeric limit
- 4With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 0 | 8 | 4 | February 28, 2026 | 146% over the limit |
| pH | 0 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 4 | 0 | ||
| Outfall observation,visual, y/n response | 0 | 2 | 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
- 18Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 21, 2026 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| August 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 1, 2024 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| April 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 21, 2023 | Reporting Violations - Late Submittal of DMRs | ST6 |
| August 21, 2023 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2023 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2023 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2023 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2023 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| November 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 28, 2019 | Effluent Violations - Narrative Effluent Violation | ST6 |
| May 28, 2019 | Permit Violations - Discharge Without a Valid Permit | 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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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MIG640222 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.