Clean Water Act discharge permit · NPDES MI0020460
LAPEER WWTP, Lapeer, MI: NPDES MI0020460 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 34Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
- 1Inspections on file
- 0Formal enforcement actions
LAPEER WWTP, held by City of Lapeer, holds NPDES permit MI0020460, which discharges to South Branch Flint River. EPA’s file records it issued September 28, 2020 and expiring October 1, 2024.
LAPEER WWTP, Lapeer, Michigan: Individual permit MI0020460, held by City of Lapeer; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 28, 2020, term to October 1, 2024, by State; discharges to South Branch Flint River; Sewage Treatment Facilities.
- Nitrogen, ammonia total [as N]: 6 limits, 21 violations of any kind, 21 effluent exceedances, latest July 31, 2026, largest 1,920% over the limit.
- Solids, total suspended: 8 limits, 12 violations of any kind, 4 effluent exceedances, latest June 30, 2026, largest 200% over the limit.
- BOD, carbonaceous [5 day, 20 C]: 12 limits, 10 violations of any kind, 2 effluent exceedances, latest June 30, 2026, largest 75% over the limit.
- Bromomethane: 0 limits, 2 violations of any kind, 2 effluent exceedances, latest April 30, 2020, largest 44% over the limit.
- Phosphorus, total [as P]: 4 limits, 5 violations of any kind, 1 effluent exceedance, latest June 30, 2026, largest 130% over the limit.
- Coliform, fecal general: 2 limits, 5 violations of any kind, 1 effluent exceedance, latest June 30, 2026, largest 8% over the limit.
- Perfluorooctanoic acid (PFOA): 4 limits, 162 violations of any kind, 0 effluent exceedances.
- Selenium, total [as Se]: 4 limits, 76 violations of any kind, 0 effluent exceedances.
- Perfluorooctanesulfonate: 4 limits, 54 violations of any kind, 0 effluent exceedances.
- Cyanide [A]: 4 limits, 38 violations of any kind, 0 effluent exceedances.
- Mercury, total [as Hg]: 4 limits, 35 violations of any kind, 0 effluent exceedances.
- Thallium, total [as Tl]: 0 limits, 14 violations of any kind, 0 effluent exceedances.
- pH: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 4 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- BOD, carb-5 day, 20 deg C, percent removal: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Solids, suspended percent removal: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Solids, total: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Arsenic, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Selenium, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Copper, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Cadmium, dry weight: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Nitrogen, total Kjeldahl: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Molybdenum, sludge, total, dry weight [as Mo]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Zinc, sludge, total, dry weight [as Zn]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Lead, sludge, total, dry weight [as Pb]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Nickel, sludge, total, dry weight [as Ni]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Nitrogen, sludge, total, dry weight [as N]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Mercury, sludge, total, dry weight [as Hg]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Potassium, sludge, total, dry weight [as K]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Phosphorus, sludge, total, dry weight [as P]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Toxicity, choice of species: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Static 48 Hr Chronic Pimphales Promelas: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Toxicity [acute], Ceriodaphnia dubia: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- TU Static 24 Hr Acute Pimephales promelas: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- June 4, 2026: Audit (S).
- December 10, 2024: Monitoring Violations - Improper Analysis or Lab Error (ST6).
- December 10, 2024: Management Practice Violations - Improper Operation and Maintenance (ST6).
- March 19, 2024: Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements (ST6).
- August 17, 2021: Pretreatment - Failure to Enforce Against I/U (ST6).
- August 17, 2021: Pretreatment - Failure to Develop/Enforce Standards (ST6).
- August 17, 2021: Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) (ST6).
- October 30, 2019: Permit Violations - Discharge Without a Valid Permit (ST6).
- January 1, 2018: Pretreatment - Failure to Develop/Enforce Standards (ST6).
- January 1, 2018: Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) (ST6).
- September 29, 2017: Effluent Violations - Narrative Effluent Violation (ST6).
- July 11, 2017: Effluent Violations - Narrative Effluent Violation (ST6).
Michigan holds 200 Publicly owned treatment works coverages of this permit type in EPA’s file; 175 were issued before MI0020460.
Coverages issued nearest MI0020460
- July 30, 2020: CHARLEVOIX WWTP, Charlevoix, MI0057737, held by City of Charlevoix
- August 28, 2020: ROSCOMMON WWTP, Roscommon, MI0021482, held by Village of Roscommon
- August 31, 2020: HARBOR BEACH WWTP, Harbor Beach, MI0020672, held by City of Harbor Beach
- September 25, 2020: PORT AUSTIN WWTP, Port Austin, MI0028517, held by Port Austin Area Sewer and Water Authority
- September 28, 2020: LOWELL WWTP, Lowell, MI0020311, held by City of Lowell
- September 28, 2020: BESSEMER AREA SA WWTP, Bessemer, MI0021067, held by Bessemer Area Sewer Authority
- September 28, 2020: TRAVERSE CITY WWTP, Traverse City, MI0027481, held by City of Traverse City
- September 30, 2020: CLINTON WWTP, Clinton, MI0021661, held by Village of Clinton
- October 27, 2020: GENESEE CO #3 WRRF, Linden, MI0022993, held by Genesee County Drain Commissioner's Office
- February 26, 2021: ALMONT WWTP, Almont, MI0020931, held by Village of Almont
LAPEER WWTP among its neighbors
EPA’s permit file holds 3 discharge permits in the Plum Creek Drain-South Branch Flint River subwatershed (HUC 040802040105), MI0020460 among them.
Other permits in the Plum Creek Drain-South Branch Flint River subwatershed (HUC 040802040105)
- GESTAMP ALABAMA-LAPEER, Lapeer: MIS510788, minor permit, discharging to South Branch Flint River, permit term to April 1, 2025
- RIVER RIDGE MHC-LAPEER CO, Lapeer: MIG580053, minor permit, discharging to South Branch Flint River, permit term to April 1, 2024
Identity
| Facility as filed | LAPEER WWTP |
|---|---|
| Permittee as filed | City of Lapeer |
| NPDES ID | MI0020460 |
| 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 | September 28, 2020 |
| Expiration date | October 1, 2024 |
| Issuing agency | State |
| Address | Lapeer, MI 48446 |
| Receiving water | South Branch Flint River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Plum Creek Drain-South Branch Flint River (HUC 040802040105) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 36Pollutants on file
- 34Under a numeric limit
- 18With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 6 | 21 | 21 | July 31, 2026 | 1,920% over the limit |
| Solids, total suspended | 8 | 12 | 4 | June 30, 2026 | 200% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 10 | 2 | June 30, 2026 | 75% over the limit |
| Bromomethane | 0 | 2 | 2 | April 30, 2020 | 44% over the limit |
| Phosphorus, total [as P] | 4 | 5 | 1 | June 30, 2026 | 130% over the limit |
| Coliform, fecal general | 2 | 5 | 1 | June 30, 2026 | 8% over the limit |
| Perfluorooctanoic acid (PFOA) | 4 | 162 | 0 | ||
| Selenium, total [as Se] | 4 | 76 | 0 | ||
| Perfluorooctanesulfonate | 4 | 54 | 0 | ||
| Cyanide [A] | 4 | 38 | 0 | ||
| Mercury, total [as Hg] | 4 | 35 | 0 | ||
| Thallium, total [as Tl] | 0 | 14 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 2 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 2 | 0 | ||
| Solids, suspended percent removal | 2 | 2 | 0 | ||
| Chlorine, total residual | 1 | 2 | 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 | ||
| Toxicity, choice of species | 2 | 0 | 0 | ||
| Static 48 Hr Chronic Pimphales Promelas | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| TU Static 24 Hr Acute Pimephales promelas | 1 | 0 | 0 |
Inspections, violations and enforcement
- 11Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 10, 2024 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| December 10, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| March 19, 2024 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| August 17, 2021 | Pretreatment - Failure to Enforce Against I/U | ST6 |
| August 17, 2021 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| August 17, 2021 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| October 30, 2019 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| January 1, 2018 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| January 1, 2018 | Failure to enforce standards, local limits, and reporting requirements (>15% SNC SIU) (Level II) | ST6 |
| September 29, 2017 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 11, 2017 | Effluent Violations - Narrative Effluent Violation | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| June 4, 2026 | Audit | 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 MI0020460.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.