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Clean Water Act discharge permit · NPDES MNG585056

COSMOS WWTP, Cosmos, MN: NPDES MNG585056 discharge permit, effluent exceedances, inspections, penalties

COSMOS WWTP, held by Cosmos city of, holds NPDES permit MNG585056. EPA’s file records it issued December 1, 2020 and expiring November 30, 2023.

COSMOS WWTP, Cosmos, Minnesota: Coverage under a general permit MNG585056, held by Cosmos city of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued December 1, 2020, term to November 30, 2023, by STA.

  • pH: 3 limits, 10 violations of any kind, 8 effluent exceedances, latest April 30, 2026.
  • Solids, total suspended: 5 limits, 8 violations of any kind, 4 effluent exceedances, latest March 31, 2024, largest 34% over the limit.
  • Phosphorus, total [as P]: 6 limits, 7 violations of any kind, 4 effluent exceedances, latest September 30, 2024, largest 35% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 5 limits, 5 violations of any kind, 1 effluent exceedance, latest March 31, 2024, largest 8% over the limit.
  • Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 2 violations of any kind, 1 effluent exceedance, latest July 31, 2024, largest 509% over the limit.
  • Flow, in conduit or thru treatment plant: 9 limits, 6 violations of any kind, 0 effluent exceedances.
  • 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.
  • Precipitation, total defined period/in: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Oxygen, dissolved [DO]: 1 limit, 1 violation of any kind, 0 effluent exceedances.

Minnesota holds 240 Publicly owned treatment works coverages of this permit type in EPA’s file; 144 were issued before MNG585056.

Coverages issued nearest MNG585056

  • December 1, 2020: ELKTON WWTP, Elkton, MNG585013, held by Elkton city of
  • December 1, 2020: FORESTON WWTP, Foreston, MNG585017, held by Foreston city of
  • December 1, 2020: KELLOGG WWTP, Kellogg, MNG585027, held by Kellogg city of
  • December 1, 2020: KENNEDY WWTP, Kennedy, MNG585028, held by Kennedy city of
  • December 1, 2020: MINNEOTA WWTP, Minneota, MNG585033, held by Minneota city of
  • December 1, 2020: RUSSELL WWTP, Russell, MNG585062, held by Russell city of
  • December 1, 2020: STOCKTON WWTP, Stockton, MNG585079, held by Stockton city of
  • December 1, 2020: CLARKFIELD WWTP, Clarkfield, MNG585093, held by Clarkfield city of
  • December 1, 2020: LAMBERTON WWTP, Lamberton, MNG585100, held by Lamberton city of
  • December 1, 2020: PENNOCK WWTP, Pennock, MNG585104, held by Pennock city of

COSMOS WWTP among its neighbors

EPA’s permit file holds 2 discharge permits in the Atkinson Lake-South Fork Crow River subwatershed (HUC 070102050205), MNG585056 among them. Its county holds 17, 1 of them major permits; MNG585056 is a minor permit.

Other permits in the Atkinson Lake-South Fork Crow River subwatershed (HUC 070102050205)

  • CEDAR MILLS WWTP, Cedar Mills: MN0066605, minor permit, discharging to S FK CROW R, permit term to February 28, 2019

Identity

Facility as filedCOSMOS WWTP
Permittee as filedCosmos city of
NPDES IDMNG585056
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
IssuedDecember 1, 2020
Expiration dateNovember 30, 2023
Issuing agencySTA
AddressCosmos, MN 56228
Receiving water impaired303(D) Listed
SubwatershedAtkinson Lake-South Fork Crow River (HUC 070102050205)
SIC4952 – Sewerage Systems

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
pH3108April 30, 2026
Solids, total suspended584March 31, 202434% over the limit
Phosphorus, total [as P]674September 30, 202435% over the limit
BOD, carbonaceous [5 day, 20 C]551March 31, 20248% over the limit
Coliform, fecal MPN + membrane ftl 44.5 C121July 31, 2024509% over the limit
Flow, in conduit or thru treatment plant960
Nitrogen, total [as N]220
Nitrogen, Kjeldahl, total [as N]220
Nitrite + Nitrate total [as N]220
Precipitation, total defined period/in110
Oxygen, dissolved [DO]110

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585056.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585056.

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 MNG585056.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit MNG585056 for the COSMOS WWTP in Cosmos, MN, held by Cosmos city of and administratively continued after its November 30, 2023 expiration date. The page lists a Minor discharger class, 11 pollutants under a numeric limit, and 5 pollutants with an effluent exceedance, with status and dates as of October 14, 2026.