Clean Water Act discharge permit · NPDES MNG585177
HERMAN WWTP, Herman, MN: NPDES MNG585177 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
HERMAN WWTP, held by Herman city of, holds NPDES permit MNG585177. EPA’s file records it issued March 1, 2021 and expiring November 30, 2023.
HERMAN WWTP, Herman, Minnesota: Coverage under a general permit MNG585177, held by Herman city of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued March 1, 2021, term to November 30, 2023, by STA.
- Phosphorus, total [as P]: 4 limits, 2 violations of any kind, 2 effluent exceedances, latest April 30, 2024, largest 40% over the limit.
- Solids, total suspended: 5 limits, 1 violation of any kind, 1 effluent exceedance, latest May 31, 2022, largest 11% over the limit.
- Flow, in conduit or thru treatment plant: 9 limits, 0 violations of any kind, 0 effluent exceedances.
- BOD, carbonaceous [5 day, 20 C]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
- pH: 3 limits, 0 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Nitrogen, Kjeldahl, total [as N]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Precipitation, total defined period/in: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Oxygen, dissolved [DO]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Nitrogen, ammonia total [as N]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Solids, total dissolved: 1 limit, 0 violations of any kind, 0 effluent exceedances.
Minnesota holds 240 Publicly owned treatment works coverages of this permit type in EPA’s file; 171 were issued before MNG585177.
Coverages issued nearest MNG585177
- March 1, 2021: CHOKIO WWTP, Chokio, MNG585007, held by Chokio city of
- March 1, 2021: FREEBORN WWTP, Freeborn, MNG585018, held by Freeborn city of
- March 1, 2021: ECHO WWTP, Echo, MNG585059, held by Echo city of
- March 1, 2021: ROLLINGSTONE WWTP, Rollingstone, MNG585078, held by Rollingstone city of
- March 1, 2021: BARNUM WWTP, Barnum, MNG585142, held by Barnum city of
- March 1, 2021: DEER CREEK WWTP, Deer Creek, MNG585180, held by Deer Creek city of
- August 1, 2021: CLARISSA WWTP, Clarissa, MNG585008, held by Clarissa city of
- August 1, 2021: CLEVELAND WWTP, Cleveland, MNG585009, held by Cleveland city of
- August 1, 2021: NICOLLET WWTP, Nicollet, MNG585037, held by Nicollet city of
- August 1, 2021: WHEATON WWTP, Wheaton, MNG585044, held by Wheaton city of
HERMAN WWTP among its neighbors
EPA’s permit file holds 1 discharge permits in the Niemackl Lakes subwatershed (HUC 090201020401), MNG585177 among them. Its county holds 13, 0 of them major permits; MNG585177 is a minor permit.
Identity
| Facility as filed | HERMAN WWTP |
|---|---|
| Permittee as filed | Herman city of |
| NPDES ID | MNG585177 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 1, 2021 |
| Expiration date | November 30, 2023 |
| Issuing agency | STA |
| Address | Herman, MN 56248 |
| Subwatershed | Niemackl Lakes (HUC 090201020401) |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 13Pollutants on file
- 13Under a numeric limit
- 2With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 4 | 2 | 2 | April 30, 2024 | 40% over the limit |
| Solids, total suspended | 5 | 1 | 1 | May 31, 2022 | 11% over the limit |
| Flow, in conduit or thru treatment plant | 9 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 5 | 0 | 0 | ||
| pH | 3 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585177.
Inspections
EPA’s inspection file holds no inspection for NPDES MNG585177.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MNG585177.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.