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Clean Water Act discharge permit · NPDES MIG580218

INTERIOR TWP WWSL, Trout Creek, MI: NPDES MIG580218 discharge permit, effluent exceedances, inspections, penalties

INTERIOR TWP WWSL, held by Interior Township, holds NPDES permit MIG580218. EPA’s file records it issued February 12, 2015 and expiring April 1, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedINTERIOR TWP WWSL
Permittee as filedInterior Township
NPDES IDMIG580218
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 12, 2015
Expiration dateApril 1, 2019
Issuing agencyState
AddressTrout Creek, MI 49967
SubwatershedTrout Creek (HUC 040201020206)

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
Solids, total suspended4984October 31, 202548% over the limit
Coliform, fecal general2973October 31, 20211,100% over the limit
BOD, 5-day, 20 deg. C2962April 30, 202510% over the limit
Oxygen, dissolved [DO]1481May 31, 202628% over the limit
pH2940
Flow, in conduit or thru treatment plant2940
Nitrogen, ammonia total [as N]2670
Phosphorus, total [as P]2670
Solids, total3270
Arsenic, dry weight3270
Selenium, dry weight3270
Copper, dry weight3270
Cadmium, dry weight3270
Nitrogen, total Kjeldahl3270
Molybdenum, sludge, total, dry weight [as Mo]3270
Zinc, sludge, total, dry weight [as Zn]3270
Lead, sludge, total, dry weight [as Pb]3270
Nickel, sludge, total, dry weight [as Ni]3270
Nitrogen, sludge, total, dry weight [as N]3270
Mercury, sludge, total, dry weight [as Hg]3270
Potassium, sludge, total, dry weight [as K]3270
Phosphorus, sludge, total, dry weight [as P]3270

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

DateWhat EPA recordedAgency
December 21, 2025Reporting Violations - Late Submittal of DMRsST6
November 21, 2025Reporting Violations - Late Submittal of DMRsST6
July 21, 2025Reporting Violations - Late Submittal of DMRsST6
April 21, 2025Reporting Violations - Late Submittal of DMRsST6
December 21, 2024Reporting Violations - Late Submittal of DMRsST6
October 31, 2024Reporting Violations - Late Submittal of DMRsST6
April 21, 2024Reporting Violations - Late Submittal of DMRsST6
January 21, 2024Reporting Violations - Late Submittal of DMRsST6
October 31, 2023Reporting Violations - Late Submittal of DMRsST6
June 21, 2023Reporting Violations - Late Submittal of DMRsST6
May 21, 2023Reporting Violations - Late Submittal of DMRsST6
April 21, 2023Reporting Violations - Late Submittal of DMRsST6
December 21, 2022Reporting Violations - Late Submittal of DMRsST6
November 21, 2022Reporting Violations - Late Submittal of DMRsST6
July 21, 2022Reporting Violations - Late Submittal of DMRsST6
May 21, 2022Reporting Violations - Late Submittal of DMRsST6
December 21, 2021Reporting Violations - Late Submittal of DMRsST6
October 31, 2021Reporting Violations - Late Submittal of DMRsST6
June 21, 2021Reporting Violations - Late Submittal of DMRsST6
May 21, 2021Reporting Violations - Late Submittal of DMRsST6
April 21, 2021Reporting Violations - Late Submittal of DMRsST6
October 31, 2020Reporting Violations - Late Submittal of DMRsST6
July 21, 2020Reporting Violations - Late Submittal of DMRsST6
June 21, 2020Reporting Violations - Late Submittal of DMRsST6
May 21, 2020Reporting Violations - Late Submittal of DMRsST6
April 21, 2020Reporting Violations - Late Submittal of DMRsST6
January 21, 2020Reporting Violations - Late Submittal of DMRsST6
December 21, 2019Reporting Violations - Late Submittal of DMRsST6
November 21, 2019Reporting Violations - Late Submittal of DMRsST6
October 31, 2019Reporting Violations - Late Submittal of DMRsST6
July 21, 2019Reporting Violations - Late Submittal of DMRsST6
June 21, 2019Reporting Violations - Late Submittal of DMRsST6
May 21, 2019Reporting Violations - Late Submittal of DMRsST6
December 21, 2018Reporting Violations - Late Submittal of DMRsST6
November 21, 2018Reporting Violations - Late Submittal of DMRsST6
October 31, 2018Reporting Violations - Late Submittal of DMRsST6
June 21, 2018Reporting Violations - Late Submittal of DMRsST6
May 21, 2018Reporting Violations - Late Submittal of DMRsST6
April 21, 2018Reporting Violations - Late Submittal of DMRsST6
January 21, 2018Reporting Violations - Late Submittal of DMRsST6
December 21, 2017Reporting Violations - Late Submittal of DMRsST6
November 21, 2017Reporting Violations - Late Submittal of DMRsST6
October 31, 2017Reporting Violations - Late Submittal of DMRsST6
July 21, 2017Reporting Violations - Late Submittal of DMRsST6
June 21, 2017Reporting Violations - Late Submittal of DMRsST6
May 21, 2017Reporting Violations - Late Submittal of DMRsST6
April 21, 2017Reporting Violations - Late Submittal of DMRsST6
January 21, 2017Reporting Violations - Late Submittal of DMRsST6

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.

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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 MIG580218 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.