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Clean Water Act discharge permit · NPDES MNG585160

MARIETTA WWTP, Marietta, MN: NPDES MNG585160 discharge permit, effluent exceedances, inspections, penalties

MARIETTA WWTP, held by Marietta city of, holds NPDES permit MNG585160. EPA’s file records it issued December 1, 2020 and expiring November 30, 2023.

MARIETTA WWTP, Marietta, Minnesota: Coverage under a general permit MNG585160, held by Marietta 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, 3 violations of any kind, 1 effluent exceedance, latest June 30, 2021.
  • Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 1 violation of any kind, 1 effluent exceedance, latest June 30, 2024, largest 106% over the limit.
  • Flow, in conduit or thru treatment plant: 9 limits, 6 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 5 limits, 4 violations of any kind, 0 effluent exceedances.
  • BOD, carbonaceous [5 day, 20 C]: 5 limits, 4 violations of any kind, 0 effluent exceedances.
  • Phosphorus, total [as P]: 4 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nitrogen, total [as N]: 2 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nitrogen, Kjeldahl, total [as N]: 2 limits, 3 violations of any kind, 0 effluent exceedances.
  • Nitrite + Nitrate total [as N]: 2 limits, 3 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 MNG585160.

Coverages issued nearest MNG585160

  • December 1, 2020: LAMBERTON WWTP, Lamberton, MNG585100, held by Lamberton city of
  • December 1, 2020: PENNOCK WWTP, Pennock, MNG585104, held by Pennock city of
  • December 1, 2020: FERTILE WWTP, Fertile, MNG585138, held by Fertile city of
  • December 1, 2020: KARLSTAD WWTP, Karlstad, MNG585146, held by Karlstad city of
  • December 1, 2020: CANBY WWTP, Canby, MNG585154, held by Canby city of
  • December 1, 2020: STEPHEN WWTP, Stephen, MNG585162, held by Stephen city of
  • December 1, 2020: NIELSVILLE WWTP, Nielsville, MNG585166, held by Nielsville city of
  • December 1, 2020: BIG STONE CO HUTTERITE COLONY GRACEVILLE, Graceville, MNG585168, held by Big Stone County Hutterite Colony
  • December 1, 2020: ROUND LAKE WWTP, Round Lake, MNG585198, held by Round Lake city of
  • December 1, 2020: SARGEANT WWTP, Sargeant, MNG585214, held by Sargeant city of

MARIETTA WWTP among its neighbors

EPA’s permit file holds 1 discharge permits in the Lower County Ditch No 5 subwatershed (HUC 070200030306), MNG585160 among them. Its county holds 24, 0 of them major permits; MNG585160 is a minor permit.

Identity

Facility as filedMARIETTA WWTP
Permittee as filedMarietta city of
NPDES IDMNG585160
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
AddressMarietta, MN 56257
SubwatershedLower County Ditch No 5 (HUC 070200030306)
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
pH331June 30, 2021
Coliform, fecal MPN + membrane ftl 44.5 C111June 30, 2024106% over the limit
Flow, in conduit or thru treatment plant960
Solids, total suspended540
BOD, carbonaceous [5 day, 20 C]540
Phosphorus, total [as P]430
Nitrogen, total [as N]230
Nitrogen, Kjeldahl, total [as N]230
Nitrite + Nitrate total [as N]230
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 MNG585160.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585160.

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 MNG585160.

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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 MNG585160 for the MARIETTA WWTP in Marietta, MN, held by Marietta city of, which is administratively continued and classed as a minor discharger. The figures listed are 11 pollutants on file, 11 under a numeric limit, 11 with a violation, and 2 pollutants with an effluent exceedance.