Clean Water Act discharge permit · NPDES MI0022942
FRANKENMUTH WRRF, Frankenmuth, MI: NPDES MI0022942 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
FRANKENMUTH WRRF, held by City of Frankenmuth, holds NPDES permit MI0022942, which discharges to Cass River. EPA’s file records it issued July 30, 2024 and expiring October 1, 2029. 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 | FRANKENMUTH WRRF |
|---|---|
| Permittee as filed | City of Frankenmuth |
| NPDES ID | MI0022942 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 30, 2024 |
| Expiration date | October 1, 2029 |
| Issuing agency | State |
| Address | Frankenmuth, MI 48734 |
| Receiving water | Cass River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cole Creek-Cass River (HUC 040802050305) |
| 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
- 29Pollutants on file
- 28Under a numeric limit
- 26With 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, total suspended | 12 | 53 | 29 | April 30, 2026 | 631% over the limit |
| Nitrogen, ammonia total [as N] | 23 | 22 | 16 | October 31, 2023 | 108% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 20 | 36 | 8 | July 31, 2025 | 140% over the limit |
| Phosphorus, total [as P] | 4 | 19 | 7 | December 31, 2024 | 1,422% over the limit |
| Solids, suspended percent removal | 4 | 12 | 6 | July 31, 2025 | 240% over the limit |
| Mercury, total [as Hg] | 6 | 58 | 3 | December 31, 2014 | 22,122% over the limit |
| Coliform, fecal general | 2 | 15 | 3 | December 31, 2024 | 15% over the limit |
| Oxygen, dissolved [DO] | 4 | 9 | 3 | September 30, 2013 | 8% over the limit |
| pH | 2 | 13 | 1 | August 31, 2017 | |
| Cyanide [A] | 0 | 13 | 1 | July 31, 2011 | 669% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 14 | 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 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 4 | 4 | 0 | ||
| Chloride [as Cl] | 1 | 0 | 0 | ||
| Sulfate, total [as SO4] | 1 | 0 | 0 | ||
| Chlorine, total residual | 1 | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| June 9, 2021 | WW SSO - Discharge to Waters | ST6 |
| June 9, 2021 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| May 25, 2019 | WW SSO - Discharge to Waters | ST6 |
| May 25, 2019 | Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environment | ST6 |
| January 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 31, 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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MI0022942.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 MI0022942 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.