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Clean Water Act discharge permit · NPDES MNG585031

MCINTOSH WWTP, Mcintosh, MN: NPDES MNG585031 discharge permit, effluent exceedances, inspections, penalties

MCINTOSH WWTP, held by McIntosh city of, holds NPDES permit MNG585031. EPA’s file records it issued January 1, 2024 and expiring November 30, 2028.

MCINTOSH WWTP, Mcintosh, Minnesota: Coverage under a general permit MNG585031, held by McIntosh city of; Publicly owned treatment works; Effective; issued January 1, 2024, term to November 30, 2028, by STA.

  • Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 1 violation of any kind, 1 effluent exceedance, latest June 30, 2022, largest 407% 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.
  • Nitrogen, ammonia total [as N]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Solids, total dissolved: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • 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.
  • pH: 3 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.
  • Sulfate, total [as SO4]: 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 MNG585031.

Coverages issued nearest MNG585031

  • November 1, 2022: DANUBE WWTP, Danube, MNG585057, held by Danube city of
  • November 1, 2022: PORTER WWTP, Porter, MNG585128, held by Porter city of
  • January 1, 2023: WENDELL WWTP, Wendell, MNG585153, held by Wendell city of
  • February 1, 2023: COMMUNITY OF ROSELAND WWTP, Blomkest, MNG585393, held by Roseland Township
  • June 1, 2023: SEARLES WWTP, Searles, MNG585080, held by Cottonwood Township
  • 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: WILLOW RIVER WWTP, Willow River, MNG585054, held by Willow River city of
  • January 1, 2024: MAPLETON WWTP, Mapleton, MNG585089, held by Mapleton city of

MCINTOSH WWTP among its neighbors

EPA’s permit file holds 2 discharge permits in the Middle Poplar River subwatershed (HUC 090203050402), MNG585031 among them. Its county holds 18, 2 of them major permits; MNG585031 is a minor permit.

Other permits in the Middle Poplar River subwatershed (HUC 090203050402)

  • MCINTOSH, Mcintosh: MNG580031, minor permit, discharging to POPLAR R, permit term to February 28, 2010

Identity

Facility as filedMCINTOSH WWTP
Permittee as filedMcIntosh city of
NPDES IDMNG585031
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
AddressMcintosh, MN 56556
Receiving water impaired303(D) Listed
SubwatershedMiddle Poplar River (HUC 090203050402)
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
Coliform, fecal MPN + membrane ftl 44.5 C111June 30, 2022407% over the limit
Nitrogen, total [as N]220
Nitrogen, Kjeldahl, total [as N]220
Nitrite + Nitrate total [as N]220
Nitrogen, ammonia total [as N]110
Solids, total dissolved110
Flow, in conduit or thru treatment plant900
Solids, total suspended500
BOD, carbonaceous [5 day, 20 C]500
pH300
Phosphorus, total [as P]300
Precipitation, total defined period/in100
Oxygen, dissolved [DO]100
Sulfate, total [as SO4]100

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585031.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585031.

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 MNG585031.

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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 the Clean Water Act discharge permit NPDES MNG585031 for the MCINTOSH WWTP in Mcintosh, MN, held by McIntosh city of, with permit status Effective and issued January 1, 2024, expiring November 30, 2028. The page lists 14 pollutants on file, 14 under a numeric limit, 6 with a violation of any kind, and 1 with an effluent exceedance.