Clean Water Act discharge permit · NPDES MI0021423
KI SAWYER WWTP - MARQUETTE CO, Gwinn, MI: NPDES MI0021423 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 29Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
KI SAWYER WWTP - MARQUETTE CO, held by Marquette County, holds NPDES permit MI0021423, which discharges to Silver Lead Creek. EPA’s file records it issued July 26, 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 | KI SAWYER WWTP - MARQUETTE CO |
|---|---|
| Permittee as filed | Marquette County |
| NPDES ID | MI0021423 |
| 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 | July 26, 2019 |
| Expiration date | October 1, 2023 |
| Issuing agency | State |
| Address | Gwinn, MI 49841 |
| Receiving water | Silver Lead Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Nelson Creek-Chocolay River (HUC 040202010101) |
| Program components on file | Biosolids, POTW |
| 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
- 29Under a numeric limit
- 31With 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 |
|---|---|---|---|---|---|
| pH | 2 | 55 | 13 | June 30, 2024 | |
| Coliform, fecal general | 2 | 57 | 11 | August 31, 2024 | 910% over the limit |
| Copper, total [as Cu] | 4 | 55 | 11 | May 31, 2007 | 6,324% over the limit |
| Nitrogen, ammonia total [as N] | 14 | 130 | 10 | July 31, 2022 | 143% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 12 | 192 | 8 | August 31, 2023 | 102% over the limit |
| Phosphorus, total [as P] | 4 | 50 | 6 | June 30, 2013 | 23% over the limit |
| Oxygen, dissolved [DO] | 2 | 49 | 3 | August 31, 2024 | 8% over the limit |
| Solids, suspended percent removal | 2 | 30 | 3 | March 31, 2023 | 20% over the limit |
| Chlorine, total residual | 1 | 25 | 2 | September 30, 2022 | 39,900% over the limit |
| Solids, total suspended | 8 | 93 | 1 | November 30, 2010 | 3% over the limit |
| Mercury, total [as Hg] | 6 | 186 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 47 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 34 | 0 | ||
| Perfluorooctanesulfonate | 4 | 33 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 4 | 32 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 2 | 20 | 0 | ||
| Cyanide [A] | 0 | 14 | 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 |
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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 11, 2018 | Effluent Violations - Narrative Effluent Violation | ST6 |
| March 30, 2017 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| February 23, 2017 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | 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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Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.