Clean Water Act discharge permit · NPDES MI0024392
WYOMING WWTP, Wyoming, MI: NPDES MI0024392 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
WYOMING WWTP, held by City of Wyoming, holds NPDES permit MI0024392, which discharges to Grand River. EPA’s file records it issued July 28, 2021 and expiring October 1, 2025. 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 | WYOMING WWTP |
|---|---|
| Permittee as filed | City of Wyoming |
| NPDES ID | MI0024392 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 28, 2021 |
| Expiration date | October 1, 2025 |
| Issuing agency | State |
| Address | Wyoming, MI 49418 |
| Receiving water | Grand River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Town of Walker-Grand River (HUC 040500060512) |
| Program components on file | Biosolids, POTW, Pretreatment |
| 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
- 31Pollutants on file
- 28Under a numeric limit
- 17With a violation of any kind
- 11With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 1 | 28 | 20 | June 30, 2020 | 9,374% over the limit |
| Oxygen, dissolved [DO] | 2 | 19 | 17 | September 30, 2021 | 70% over the limit |
| Solids, total suspended | 4 | 23 | 15 | May 31, 2025 | 344% over the limit |
| Coliform, fecal general | 2 | 21 | 15 | May 31, 2026 | 99,999% over the limit |
| Phosphorus, total [as P] | 4 | 15 | 10 | July 31, 2025 | 160% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 8 | 21 | 9 | August 31, 2025 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 5 | 9 | 4 | July 31, 2025 | 118% over the limit |
| Mercury, total [as Hg] | 6 | 6 | 2 | July 31, 2010 | 112,678% over the limit |
| pH | 2 | 5 | 1 | May 31, 2025 | |
| Solids, suspended percent removal | 2 | 4 | 1 | April 30, 2011 | 67% over the limit |
| Toxicity, choice of species | 0 | 2 | 1 | July 31, 2017 | 99,999% over the limit |
| Perfluorooctanoic acid (PFOA) | 4 | 168 | 0 | ||
| Perfluorooctanesulfonate | 4 | 84 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 2 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Solids, total | 3 | 0 | 0 | ||
| Arsenic, dry weight | 3 | 0 | 0 | ||
| Selenium, dry weight | 3 | 0 | 0 | ||
| Copper, dry weight | 3 | 0 | 0 | ||
| Cadmium, dry weight | 3 | 0 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 0 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 0 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 0 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 0 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 0 | 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
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 21, 2026 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 29, 2025 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| October 16, 2023 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| October 16, 2023 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| February 16, 2023 | Pretreatment - Failure to Establish Local Limits | ST6 |
| February 16, 2023 | Pretreatment - Failure to Enforce Against I/U | ST6 |
| February 16, 2023 | Failure to issue/reissue control mechanisms to at least 90% of SIU/CIUs w/in 6 months (Level II) | ST6 |
| February 16, 2023 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| December 13, 2022 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| December 13, 2022 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| October 31, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 11, 2017 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| January 11, 2017 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| June 9, 2026 | Toxics | S |
| May 27, 2026 | Reconnaissance without Sampling | S |
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MI0024392.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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How we handle your data → Privacy
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 MI0024392 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.