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Clean Water Act discharge permit · NPDES MNG585164

SILVER LAKE WWTP, Silver Lake, MN: NPDES MNG585164 discharge permit, effluent exceedances, inspections, penalties

SILVER LAKE WWTP, held by Silver Lake city of, holds NPDES permit MNG585164. EPA’s file records it issued August 1, 2021 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.

What the register holds for SILVER LAKE WWTP: its NPDES ID, its permit type and status, its dates, its address in Silver Lake, Minnesota, and 13 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MNG585164.

Identity

Facility as filedSILVER LAKE WWTP
Permittee as filedSilver Lake city of
NPDES IDMNG585164
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
IssuedAugust 1, 2021
Expiration dateNovember 30, 2023
Issuing agencySTA
AddressSilver Lake, MN 55381
SubwatershedOtter Creek (HUC 070102050305)

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
Flow, in conduit or thru treatment plant900
Solids, total suspended500
Phosphorus, total [as P]500
BOD, carbonaceous [5 day, 20 C]500
pH300
Nitrogen, total [as N]200
Nitrogen, Kjeldahl, total [as N]200
Nitrite + Nitrate total [as N]200
Precipitation, total defined period/in100
Oxygen, dissolved [DO]100
Nitrogen, ammonia total [as N]100
Coliform, fecal MPN + membrane ftl 44.5 C100
Solids, total dissolved100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MNG585164.

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 MNG585164.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

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

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MNG585164.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 MNG585164 there.

Nearby on the register

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