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Clean Water Act discharge permit · NPDES MNG585125

SUNBURG WWTP, Sunburg, MN: NPDES MNG585125 discharge permit, effluent exceedances, inspections, penalties

SUNBURG WWTP, held by Sunburg city of, holds NPDES permit MNG585125. EPA’s file records it issued January 1, 2020 and expiring November 30, 2023.

SUNBURG WWTP, Sunburg, Minnesota: Coverage under a general permit MNG585125, held by Sunburg 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, 17 violations of any kind, 13 effluent exceedances, latest April 30, 2025, largest 75% over the limit.
  • pH: 3 limits, 12 violations of any kind, 12 effluent exceedances, latest April 30, 2026.
  • BOD, carbonaceous [5 day, 20 C]: 5 limits, 8 violations of any kind, 4 effluent exceedances, latest April 30, 2025, largest 44% over the limit.
  • Coliform, fecal MPN + membrane ftl 44.5 C: 1 limit, 4 violations of any kind, 3 effluent exceedances, latest September 30, 2023, largest 243% over the limit.
  • Flow, in conduit or thru treatment plant: 9 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.
  • Phosphorus, total [as P]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
  • Oxygen, dissolved [DO]: 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 MNG585125.

Coverages issued nearest MNG585125

  • January 1, 2020: DANVERS WWTP, Danvers, MNG585119, held by Danvers city of
  • January 1, 2020: FROST WWTP, Frost, MNG585120, held by Frost city of
  • January 1, 2020: GHENT WWTP, Ghent, MNG585121, held by Ghent city of
  • January 1, 2020: LOWRY WWTP, Lowry, MNG585123, held by Lowry city of
  • January 1, 2020: MILROY WWTP, Milroy, MNG585124, held by Milroy city of
  • January 1, 2020: COMSTOCK WWTP, Comstock, MNG585131, held by Comstock city of
  • January 1, 2020: GEORGETOWN WWTP, Georgetown, MNG585132, held by Georgetown city of
  • January 1, 2020: TWIN VALLEY WWTP, Twin Valley, MNG585137, held by Twin Valley city of
  • January 1, 2020: GRYGLA WWTP, Grygla, MNG585139, held by Grygla city of
  • January 1, 2020: ARGYLE WWTP, Argyle, MNG585140, held by Argyle city of

SUNBURG WWTP among its neighbors

EPA’s permit file holds 1 discharge permits in the Sunburg Lake subwatershed (HUC 070200050402), MNG585125 among them. Its county holds 25, 1 of them major permits; MNG585125 is a minor permit.

Identity

Facility as filedSUNBURG WWTP
Permittee as filedSunburg city of
NPDES IDMNG585125
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
AddressSunburg, MN 56289
Receiving water impaired303(D) Listed
SubwatershedSunburg Lake (HUC 070200050402)
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
Solids, total suspended51713April 30, 202575% over the limit
pH31212April 30, 2026
BOD, carbonaceous [5 day, 20 C]584April 30, 202544% over the limit
Coliform, fecal MPN + membrane ftl 44.5 C143September 30, 2023243% over the limit
Flow, in conduit or thru treatment plant930
Nitrogen, total [as N]230
Nitrogen, Kjeldahl, total [as N]230
Nitrite + Nitrate total [as N]230
Precipitation, total defined period/in110
Phosphorus, total [as P]400
Oxygen, dissolved [DO]100

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MNG585125.

Inspections

EPA’s inspection file holds no inspection for NPDES MNG585125.

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 MNG585125.

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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 MNG585125 for SUNBURG WWTP in Sunburg, MN, held by Sunburg city of, with a status of administratively continued and a discharger class of minor. The facts list 11 pollutants on file, 9 of them under a numeric limit, and 4 pollutants with an effluent exceedance.