Clean Water Act discharge permit · NPDES MN0053279
BIWABIK WWTP, Biwabik, MN: NPDES MN0053279 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
BIWABIK WWTP, held by Biwabik city of, holds NPDES permit MN0053279. EPA’s file records it issued April 1, 2022 and expiring February 28, 2027. 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 | BIWABIK WWTP |
|---|---|
| Permittee as filed | Biwabik city of |
| NPDES ID | MN0053279 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 1, 2022 |
| Expiration date | February 28, 2027 |
| Issuing agency | STA |
| Address | Biwabik, MN 55708 |
| Subwatershed | Embarrass River (HUC 040102010305) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 19Pollutants on file
- 16Under a numeric limit
- 18With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| pH | 5 | 89 | 7 | June 30, 2026 | |
| Solids, total suspended | 8 | 68 | 7 | October 31, 2023 | 260% over the limit |
| Mercury, total [as Hg] | 9 | 5 | 4 | September 30, 2024 | 154% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 5 | 101 | 2 | June 30, 1995 | 305% over the limit |
| Phosphorus, total [as P] | 5 | 79 | 2 | September 30, 2023 | 331% over the limit |
| Coliform, fecal MPN + membrane ftl 44.5 C | 2 | 46 | 1 | October 31, 2023 | 14% over the limit |
| Flow, in conduit or thru treatment plant | 12 | 88 | 0 | ||
| Nitrogen, total [as N] | 2 | 44 | 0 | ||
| Alkalinity, total [as CaCO3] | 0 | 38 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 38 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 36 | 0 | ||
| Water level at sample collection time | 0 | 30 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 19 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 6 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 6 | 0 | ||
| Sulfate, total [as SO4] | 2 | 4 | 0 | ||
| Solids, total dissolved | 1 | 4 | 0 | ||
| Mercury, dissolved [as Hg] | 3 | 1 | 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 MN0053279.
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 MN0053279 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.