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Clean Water Act discharge permit · NPDES MNG585108

CLONTARF WWTP, Clontarf, MN: NPDES MNG585108 discharge permit, effluent exceedances, inspections, penalties

CLONTARF WWTP, held by Clontarf city of, holds NPDES permit MNG585108. EPA’s file records it issued February 1, 2020 and expiring November 30, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedCLONTARF WWTP
Permittee as filedClontarf city of
NPDES IDMNG585108
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
IssuedFebruary 1, 2020
Expiration dateNovember 30, 2023
Issuing agencySTA
AddressClontarf, MN 56226
SubwatershedCity of Clontarf-Chippewa River (HUC 070200050703)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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
pH31110August 31, 2025
Solids, total suspended577August 31, 2025153% over the limit
BOD, carbonaceous [5 day, 20 C]522May 31, 2020125% over the limit
Nitrogen, total [as N]210
Nitrite + Nitrate total [as N]210
Flow, in conduit or thru treatment plant900
Phosphorus, total [as P]400
Nitrogen, Kjeldahl, total [as N]200
Precipitation, total defined period/in100
Oxygen, dissolved [DO]100
Coliform, fecal MPN + membrane ftl 44.5 C100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585108.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585108.

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 MNG585108.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MNG585108 there.

CLONTARF WWTP, Clontarf, Minnesota: Coverage under a general permit MNG585108, held by Clontarf city of; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued February 1, 2020, term to November 30, 2023, by STA.

  • pH: 3 limits, 11 violations of any kind, 10 effluent exceedances, latest August 31, 2025.
  • Solids, total suspended: 5 limits, 7 violations of any kind, 7 effluent exceedances, latest August 31, 2025, largest 153% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 5 limits, 2 violations of any kind, 2 effluent exceedances, latest May 31, 2020, largest 125% over the limit.
  • Nitrogen, total [as N]: 2 limits, 1 violation of any kind, 0 effluent exceedances.
  • Nitrite + Nitrate total [as N]: 2 limits, 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.
  • Phosphorus, total [as P]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
  • Nitrogen, Kjeldahl, 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.
  • 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; 88 were issued before MNG585108.

Coverages issued nearest MNG585108

  • February 1, 2020: KILKENNY WWTP, Kilkenny, MNG585084, held by Kilkenny city of
  • February 1, 2020: TAUNTON WWTP, Taunton, MNG585090, held by Taunton city of
  • February 1, 2020: CLEMENTS WWTP, Clements, MNG585094, held by Clements city of
  • February 1, 2020: IVANHOE WWTP, Ivanhoe, MNG585103, held by Ivanhoe city of
  • February 1, 2020: STORDEN WWTP, Storden, MNG585106, held by Storden city of
  • February 1, 2020: NEUHOF HUTTERIAN BRETHREN, Mountain Lake, MNG585113, held by Neuhof Hutterian Brethren
  • February 1, 2020: REVERE WWTP, Revere, MNG585114, held by Revere city of
  • February 1, 2020: SANBORN WWTP, Sanborn, MNG585115, held by Sanborn city of
  • February 1, 2020: WANDA WWTP, Wanda, MNG585126, held by Wanda city of
  • February 1, 2020: WESTBROOK WWTP, Westbrook, MNG585127, held by Westbrook city of

CLONTARF WWTP among its neighbors

EPA’s permit file holds 1 discharge permits in the City of Clontarf-Chippewa River subwatershed (HUC 070200050703), MNG585108 among them. Its county holds 18, 0 of them major permits; MNG585108 is a minor permit.

Nearby on the register

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

What this page shows

This public-records page covers the NPDES discharge permit MNG585108 for the CLONTARF WWTP in Clontarf, MN, held by Clontarf city of, with a permit status of Administratively continued and a Minor Discharger class. The facts list 11 pollutants on file, 5 under a numeric limit, and 3 with an effluent exceedance.