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Clean Water Act discharge permit · NPDES MNG585088

ULEN WWTP, Ulen, MN: NPDES MNG585088 discharge permit, effluent exceedances, inspections, penalties

ULEN WWTP, held by Ulen city of, holds NPDES permit MNG585088. EPA’s file records it issued January 1, 2020 and expiring November 30, 2023.

ULEN WWTP, Ulen, Minnesota: Coverage under a general permit MNG585088, held by Ulen city of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued January 1, 2020, term to November 30, 2023, by STA.

  • Solids, total suspended: 5 limits, 9 violations of any kind, 9 effluent exceedances, latest June 30, 2020, largest 47% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 5 limits, 4 violations of any kind, 4 effluent exceedances, latest November 30, 2019, largest 183% over the limit.
  • pH: 3 limits, 2 violations of any kind, 2 effluent exceedances, latest May 31, 2020.
  • Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 2 violations of any kind, 2 effluent exceedances, latest May 31, 2022, largest 1,110% over the limit.
  • Nitrogen, total [as N]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Nitrogen, Kjeldahl, total [as N]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Nitrite + Nitrate total [as N]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 9 limits, 0 violations of any kind, 0 effluent exceedances.
  • Phosphorus, total [as P]: 3 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.
  • 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; 13 were issued before MNG585088.

Coverages issued nearest MNG585088

  • January 1, 2020: HAVEN HUTTERIAN BRETHREN, Dexter, MNG585071, held by Haven Hutterian Brethren
  • January 1, 2020: WARREN WWTP, Warren, MNG585073, held by Warren city of
  • January 1, 2020: EVANSVILLE WWTP, Evansville, MNG585074, held by Evansville city of
  • January 1, 2020: PEMBERTON WWTP, Pemberton, MNG585075, held by Pemberton city of
  • January 1, 2020: LISMORE WWTP, Lismore, MNG585076, held by Lismore city of
  • January 1, 2020: ADA WWTP, Ada, MNG585095, held by Ada city of
  • January 1, 2020: KIESTER WWTP, Kiester, MNG585097, held by Kiester city of
  • January 1, 2020: CLEARBROOK WWTP, Clearbrook, MNG585098, held by Clearbrook city of
  • January 1, 2020: HARTLAND WWTP, Hartland, MNG585102, held by Hartland city of
  • January 1, 2020: RUTHTON WWTP, Ruthton, MNG585105, held by Ruthton city of

ULEN WWTP among its neighbors

EPA’s permit file holds 1 discharge permits in the Upper South Branch Wild Rice River subwatershed (HUC 090201081002), MNG585088 among them. Its county holds 25, 1 of them major permits; MNG585088 is a minor permit.

Identity

Facility as filedULEN WWTP
Permittee as filedUlen city of
NPDES IDMNG585088
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedJanuary 1, 2020
Expiration dateNovember 30, 2023
Issuing agencySTA
AddressUlen, MN 56585
Receiving water impaired303(D) Listed
SubwatershedUpper South Branch Wild Rice River (HUC 090201081002)

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
Solids, total suspended599June 30, 202047% over the limit
BOD, carbonaceous [5 day, 20 C]544November 30, 2019183% over the limit
pH322May 31, 2020
Coliform, fecal MPN + membrane ftl 44.5 C122May 31, 20221,110% over the limit
Nitrogen, total [as N]220
Nitrogen, Kjeldahl, total [as N]220
Nitrite + Nitrate total [as N]220
Flow, in conduit or thru treatment plant900
Phosphorus, total [as P]300
Precipitation, total defined period/in100
Oxygen, dissolved [DO]100
Nitrogen, ammonia total [as N]100
Solids, total dissolved100

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585088.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585088.

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 MNG585088.

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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 Clean Water Act discharge permit NPDES MNG585088 for ULEN WWTP in Ulen, MN, held by Ulen city of, a publicly owned treatment works classed as a minor discharger and listed as administratively continued. The page lists 13 pollutants on file, 7 under a numeric limit, and 4 with an effluent exceedance, within the Upper South Branch Wild Rice River (HUC 090201081002) subwatershed.