Clean Water Act discharge permit · NPDES MI0020711
PINCONNING WWTP, Pinconning, MI: NPDES MI0020711 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 25Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
PINCONNING WWTP, held by City of Pinconning, holds NPDES permit MI0020711, which discharges to Pinconning River. EPA’s file records it issued March 25, 2019 and expiring October 1, 2023. 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 | PINCONNING WWTP |
|---|---|
| Permittee as filed | City of Pinconning |
| NPDES ID | MI0020711 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 25, 2019 |
| Expiration date | October 1, 2023 |
| Issuing agency | State |
| Address | Pinconning, MI 48658 |
| Receiving water | Pinconning River |
| Subwatershed | Pinconning River (HUC 040801020107) |
| Program components on file | Biosolids, POTW |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MIK126385418 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 27Pollutants on file
- 25Under a numeric limit
- 27With a violation of any kind
- 8With 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] | 15 | 80 | 8 | September 30, 2022 | 83% over the limit |
| Solids, total suspended | 8 | 115 | 7 | May 31, 2020 | 360% over the limit |
| Oxygen, dissolved [DO] | 2 | 35 | 5 | August 31, 2018 | 27% over the limit |
| pH | 2 | 94 | 4 | April 30, 2016 | |
| BOD, carbonaceous [5 day, 20 C] | 12 | 111 | 3 | May 31, 2020 | 31% over the limit |
| Phosphorus, total [as P] | 4 | 96 | 2 | January 31, 2006 | 32,971% over the limit |
| Solids, suspended percent removal | 2 | 7 | 2 | April 30, 2016 | 340% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 12 | 1 | February 28, 2003 | 140% over the limit |
| Mercury, total [as Hg] | 6 | 266 | 0 | ||
| Coliform, fecal general | 2 | 91 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 90 | 0 | ||
| Solids, total | 3 | 9 | 0 | ||
| Arsenic, dry weight | 3 | 9 | 0 | ||
| Selenium, dry weight | 3 | 9 | 0 | ||
| Copper, dry weight | 3 | 9 | 0 | ||
| Cadmium, dry weight | 3 | 9 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 9 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 9 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 9 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 9 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 9 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 9 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 9 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 9 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 9 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 5 | 0 | ||
| Toxicity, choice of species | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 1, 2022 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| March 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 31, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| August 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 21, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 21, 2017 | Reporting Violations - Late Submittal of DMRs | 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 MI0020711 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.