Clean Water Act discharge permit · NPDES MI0024058
SAULT STE MARIE WWTP, Sault Ste Marie, MI: NPDES MI0024058 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 30Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
SAULT STE MARIE WWTP, held by City of Sault Ste. Marie, holds NPDES permit MI0024058. EPA’s file records it issued March 27, 2018 and expiring October 1, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SAULT STE MARIE WWTP |
|---|---|
| Permittee as filed | City of Sault Ste. Marie |
| NPDES ID | MI0024058 |
| 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 | March 27, 2018 |
| Expiration date | October 1, 2020 |
| Issuing agency | State |
| Address | Sault Ste Marie, MI 49783 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Frechette Creek-Frontal Saint Marys River (HUC 040700010101) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 30Pollutants on file
- 30Under a numeric limit
- 29With a violation of any kind
- 11With 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 |
|---|---|---|---|---|---|
| Mercury, total [as Hg] | 6 | 73 | 25 | December 31, 2023 | 123% over the limit |
| Coliform, fecal general | 2 | 30 | 24 | July 31, 2026 | 297% over the limit |
| Solids, suspended percent removal | 4 | 40 | 22 | June 30, 2026 | 94% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 4 | 29 | 11 | June 30, 2026 | 48% over the limit |
| Phosphorus, total [as P] | 4 | 18 | 11 | July 31, 2026 | 3,700% over the limit |
| Copper, total [as Cu] | 2 | 12 | 8 | June 30, 2023 | 365% over the limit |
| Oxygen, dissolved [DO] | 1 | 9 | 6 | September 30, 2020 | 43% over the limit |
| Chlorine, total residual | 1 | 9 | 5 | July 31, 2020 | 37% over the limit |
| pH | 2 | 9 | 3 | October 31, 2022 | |
| Solids, total suspended | 4 | 13 | 1 | March 31, 2020 | 1% over the limit |
| TU Static 24 Hr Acute Pimephales promelas | 2 | 1 | 1 | July 31, 2025 | 10% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 12 | 0 | ||
| Solids, total | 3 | 6 | 0 | ||
| Arsenic, dry weight | 3 | 6 | 0 | ||
| Selenium, dry weight | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Cadmium, dry weight | 3 | 6 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 6 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 6 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 6 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 6 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 6 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 6 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 6 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 6 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 6 | 0 | ||
| Cyanide [A] | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 2 | 0 | ||
| TU Static 24 Hr Acute Daphnia magna | 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
- 5Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 31, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 10, 2020 | Management Practice Violations - No Licensed/Certified Operator | ST6 |
| August 17, 2017 | Permit Violations - Discharge Without a Valid Permit | 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
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.