Clean Water Act discharge permit · NPDES MI0025577
SAGINAW WWTP, Saginaw, MI: NPDES MI0025577 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 29Pollutants under a numeric limit
- 13Pollutants with an effluent exceedance
SAGINAW WWTP, held by City of Saginaw, holds NPDES permit MI0025577, which discharges to Saginaw River. EPA’s file records it issued April 27, 2018 and expiring October 1, 2020. 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 | SAGINAW WWTP |
|---|---|
| Permittee as filed | City of Saginaw |
| NPDES ID | MI0025577 |
| 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 | April 27, 2018 |
| Expiration date | October 1, 2020 |
| Issuing agency | State |
| Address | Saginaw, MI 48601 |
| Receiving water | Saginaw River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Crow Island-Saginaw River (HUC 040802060201) |
| Program components on file | Biosolids, CSO, POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MID980588800 |
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
- 32Pollutants on file
- 29Under a numeric limit
- 30With a violation of any kind
- 13With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 16 | 250 | 63 | May 31, 2025 | 99,999% over the limit |
| Polychlorinated biphenyls [PCBs] | 2 | 34 | 17 | November 30, 2005 | 84,515% over the limit |
| Nitrogen, ammonia total [as N] | 33 | 387 | 3 | August 31, 2024 | 18% over the limit |
| Phosphorus, total [as P] | 30 | 404 | 2 | October 31, 2005 | 937% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 398 | 2 | March 31, 2004 | 333% over the limit |
| Toxicity [acute], Ceriodaphnia dubia | 1 | 13 | 2 | May 31, 2012 | 70% over the limit |
| BOD, 5-day, percent removal | 0 | 9 | 2 | March 31, 2005 | 21% over the limit |
| Solids, total suspended | 18 | 400 | 1 | March 31, 2004 | 17% over the limit |
| pH | 16 | 240 | 1 | September 30, 2011 | |
| Oxygen, dissolved [DO] | 8 | 120 | 1 | December 31, 2012 | 30% over the limit |
| Chlorine, total residual | 15 | 91 | 1 | June 30, 2009 | 505% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 0 | 20 | 1 | May 31, 2008 | 3% over the limit |
| Solids, suspended percent removal | 4 | 8 | 1 | January 31, 2005 | 23% over the limit |
| Flow, in conduit or thru treatment plant | 30 | 384 | 0 | ||
| Mercury, total [as Hg] | 6 | 103 | 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 | ||
| BOD, carbonaceous [5 day, 20 C] | 26 | 2 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 4 | 0 | 0 | ||
| Toxicity, choice of species | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 21, 2025 | 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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Nearby on the register
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- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.