Clean Water Act discharge permit · NPDES MI0023515
MANISTIQUE WWTP, Manistique, MI: NPDES MI0023515 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
MANISTIQUE WWTP, held by City of Manistique, holds NPDES permit MI0023515. EPA’s file records it issued September 26, 2016 and expiring October 1, 2020.
Identity
| Facility as filed | MANISTIQUE WWTP |
|---|---|
| Permittee as filed | City of Manistique |
| NPDES ID | MI0023515 |
| 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 26, 2016 |
| Expiration date | October 1, 2020 |
| Issuing agency | State |
| Address | Manistique, MI 49854 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Jamestown Slough-Manistique River (HUC 040601060604) |
| Program components on file | Biosolids, CSO, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 26Pollutants on file
- 26Under a numeric limit
- 12With a violation of any kind
- 10With 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, suspended percent removal | 2 | 34 | 32 | April 30, 2026 | 273% over the limit |
| Coliform, fecal general | 2 | 30 | 26 | April 30, 2026 | 607% over the limit |
| Solids, total suspended | 4 | 31 | 22 | January 31, 2026 | 271% over the limit |
| Mercury, total [as Hg] | 6 | 28 | 18 | January 31, 2015 | 40,669% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 14 | 12 | April 30, 2026 | 207% over the limit |
| Oxygen, dissolved [DO] | 1 | 5 | 3 | May 31, 2019 | 16% over the limit |
| Chlorine, total residual | 1 | 12 | 2 | September 30, 2016 | 453% over the limit |
| pH | 2 | 8 | 2 | September 30, 2025 | |
| BOD, carbonaceous [5 day, 20 C] | 4 | 9 | 1 | March 31, 2016 | 1% over the limit |
| Phosphorus, total [as P] | 4 | 5 | 1 | December 31, 2012 | 100% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 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 |
Inspections, violations and enforcement
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 31, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 31, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 11, 2017 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| August 10, 2026 | Reconnaissance without Sampling | S |
| July 30, 2026 | 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
| Date | What EPA recorded | Agency |
|---|---|---|
| August 4, 2026 | Letter of Violation/ Warning Letter | State |
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.