Clean Water Act discharge permit · NPDES MI0024384
WIXOM WWTP, Wixom, MI: NPDES MI0024384 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 32Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
WIXOM WWTP, held by City of Wixom, holds NPDES permit MI0024384, which discharges to Norton Creek. EPA’s file records it issued September 30, 2022 and expiring October 1, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WIXOM WWTP |
|---|---|
| Permittee as filed | City of Wixom |
| NPDES ID | MI0024384 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 30, 2022 |
| Expiration date | October 1, 2027 |
| Issuing agency | State |
| Address | Wixom, MI 48393 |
| Receiving water | Norton Creek |
| Subwatershed | Norton Creek (HUC 040900050103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 38Pollutants on file
- 32Under a numeric limit
- 32With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 5 | 124 | 87 | September 30, 2022 | 128% over the limit |
| Nitrogen, ammonia total [as N] | 10 | 153 | 52 | August 31, 2025 | 780% over the limit |
| Coliform, fecal general | 2 | 41 | 14 | December 31, 2025 | 666% over the limit |
| Cyanide [A] | 4 | 16 | 5 | September 30, 2021 | 456% over the limit |
| Solids, total suspended | 8 | 59 | 4 | February 28, 2018 | 300% over the limit |
| pH | 2 | 28 | 2 | February 28, 2022 | |
| Oxygen, dissolved [DO] | 1 | 16 | 2 | December 31, 2024 | 27% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 2 | 2 | May 31, 2008 | 140% over the limit |
| Solids, suspended percent removal | 2 | 27 | 1 | February 28, 2018 | 15% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 105 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 30 | 0 | ||
| Mercury, total [as Hg] | 4 | 24 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 0 | 13 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 6 | 0 | ||
| Copper, total [as Cu] | 0 | 5 | 0 | ||
| Molybdenum, total [as Mo] | 0 | 5 | 0 | ||
| Nickel, total [as Ni] | 0 | 5 | 0 | ||
| Solids, total | 3 | 3 | 0 | ||
| Arsenic, dry weight | 3 | 3 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Copper, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 3 | 3 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 3 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 3 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 3 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 3 | 0 | ||
| Chromium, total [as Cr] | 4 | 1 | 0 | ||
| Perfluorooctanesulfonate | 8 | 0 | 0 | ||
| Selenium, total [as Se] | 4 | 0 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 4 | 0 | 0 | ||
| Perfluorobutanesulfonic acid (PFBS) | 4 | 0 | 0 | ||
| Chloride [as Cl] | 2 | 0 | 0 | ||
| Sulfate, total [as SO4] | 2 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 24, 2025 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| January 5, 2022 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| January 5, 2022 | Pretreatment - Failure to Establish Local Limits | ST6 |
| January 5, 2022 | Failure to issue/reissue control mechanisms to at least 90% of SIU/CIUs w/in 6 months (Level II) | ST6 |
| October 31, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| November 1, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 27, 2018 | Effluent Violations - Narrative Effluent Violation | ST6 |
| August 7, 2017 | Pretreatment - Failure to Enforce Against I/U | ST6 |
| August 7, 2017 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.