Clean Water Act discharge permit · NPDES MNG585134
HOFFMAN WWTP, Hoffman, MN: NPDES MNG585134 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 22Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
HOFFMAN WWTP, held by City Of Hoffman, holds NPDES permit MNG585134. EPA’s file records it issued April 1, 2019 and expiring November 30, 2023. 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 | HOFFMAN WWTP |
|---|---|
| Permittee as filed | City Of Hoffman |
| NPDES ID | MNG585134 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 1, 2019 |
| Expiration date | November 30, 2023 |
| Issuing agency | STA |
| Address | Hoffman, MN 56339 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Red Rock Lake-Chippewa River (HUC 070200050107) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 22Under a numeric limit
- 4With a violation of any kind
- 1With 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 MPN + membrane ftl 44.5 C | 2 | 1 | 1 | June 30, 2019 | 54% over the limit |
| Nitrogen, total [as N] | 3 | 2 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 3 | 2 | 0 | ||
| Nitrite + Nitrate total [as N] | 3 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 15 | 0 | 0 | ||
| Solids, total suspended | 9 | 0 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 9 | 0 | 0 | ||
| pH | 5 | 0 | 0 | ||
| Phosphorus, total [as P] | 5 | 0 | 0 | ||
| Specific conductance | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Bicarbonate ion- [as HCO3] | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Calcium, total [as Ca] | 2 | 0 | 0 | ||
| Magnesium, total [as Mg] | 2 | 0 | 0 | ||
| Sodium, total [as Na] | 2 | 0 | 0 | ||
| Potassium, total [as K] | 2 | 0 | 0 | ||
| Chloride [as Cl] | 2 | 0 | 0 | ||
| Sulfate, total [as SO4] | 2 | 0 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 2 | 0 | 0 | ||
| Solids, total dissolved | 2 | 0 | 0 | ||
| Precipitation, total defined period/in | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585134.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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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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 MNG585134 there.
Nearby on the register
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- Every permit record in Minnesota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.