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Clean Water Act discharge permit · NPDES MNG585054

WILLOW RIVER WWTP, Willow River, MN: NPDES MNG585054 discharge permit, effluent exceedances, inspections, penalties

WILLOW RIVER WWTP, held by Willow River city of, holds NPDES permit MNG585054. EPA’s file records it issued January 1, 2024 and expiring November 30, 2028.

WILLOW RIVER WWTP, Willow River, Minnesota: Coverage under a general permit MNG585054, held by Willow River city of; Publicly owned treatment works; Effective; issued January 1, 2024, term to November 30, 2028, by STA.

  • Flow, in conduit or thru treatment plant: 9 limits, 0 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 5 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.
  • Phosphorus, total [as P]: 4 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.

Minnesota holds 240 Publicly owned treatment works coverages of this permit type in EPA’s file; 221 were issued before MNG585054.

Coverages issued nearest MNG585054

  • June 1, 2023: SEARLES WWTP, Searles, MNG585080, held by Cottonwood Township
  • January 1, 2024: MCINTOSH WWTP, Mcintosh, MNG585031, held by McIntosh city of
  • January 1, 2024: OKLEE WWTP, Oklee, MNG585038, held by Oklee city of
  • January 1, 2024: TWIN LAKES WWTP, Twin Lakes, MNG585042, held by Twin Lakes city of
  • January 1, 2024: SHAFER WWTP, Shafer, MNG585047, held by Shafer city of
  • January 1, 2024: MAPLETON WWTP, Mapleton, MNG585089, held by Mapleton city of
  • January 1, 2024: LUCAN WWTP, Lucan, MNG585112, held by Lucan city of
  • January 1, 2024: ALDEN WWTP, Alden, MNG585118, held by Alden city of
  • January 1, 2024: CLIMAX WWTP, Climax, MNG585169, held by Climax city of
  • January 1, 2024: BAUDETTE WWTP, Baudette, MNG585174, held by Baudette city of

WILLOW RIVER WWTP among its neighbors

EPA’s permit file holds 3 discharge permits in the City of Willow River-Kettle River subwatershed (HUC 070300030601), MNG585054 among them. Its county holds 17, 0 of them major permits; MNG585054 is a minor permit.

Other permits in the City of Willow River-Kettle River subwatershed (HUC 070300030601)

What the register holds for WILLOW RIVER WWTP: its NPDES ID, its permit type and status, its dates, its address in Willow River, Minnesota, and 12 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MNG585054.

Identity

Facility as filedWILLOW RIVER WWTP
Permittee as filedWillow River city of
NPDES IDMNG585054
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedJanuary 1, 2024
Expiration dateNovember 30, 2028
Issuing agencySTA
AddressWillow River, MN 55795
Receiving water impaired303(D) Listed
SubwatershedCity of Willow River-Kettle River (HUC 070300030601)

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Flow, in conduit or thru treatment plant900
Solids, total suspended500
BOD, carbonaceous [5 day, 20 C]500
Phosphorus, total [as P]400
pH300
Nitrogen, total [as N]200
Nitrogen, Kjeldahl, total [as N]200
Nitrite + Nitrate total [as N]200
Precipitation, total defined period/in100
Oxygen, dissolved [DO]100
Nitrogen, ammonia total [as N]100
Coliform, fecal MPN + membrane ftl 44.5 C100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MNG585054.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585054.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585054.

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 MNG585054.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers NPDES permit MNG585054 for the WILLOW RIVER WWTP in Willow River, MN, held by Willow River city of, with an Effective permit status as of September 15, 2026. The page lists 12 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, with the permit issued January 1, 2024 and expiring November 30, 2028.