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Clean Water Act discharge permit · NPDES MI0025500

MILK RIVER CSO RTB, Grosse Pointe Woods, MI: NPDES MI0025500 discharge permit, effluent exceedances, inspections, penalties

MILK RIVER CSO RTB, held by Milk River Intercounty Drainage Board, holds NPDES permit MI0025500, which discharges to Milk River. EPA’s file records it issued September 30, 2005 and expiring October 1, 2009.

MILK RIVER CSO RTB, Grosse Pointe Woods, Michigan: Individual permit MI0025500, held by Milk River Intercounty Drainage Board; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 30, 2005, term to October 1, 2009, by State; discharges to Milk River; Sewage Treatment Facilities.

  • Coliform, fecal general: 2 limits, 111 violations of any kind, 31 effluent exceedances, latest May 31, 2018, largest 17,400% over the limit.
  • Oxygen, dissolved [DO]: 1 limit, 52 violations of any kind, 11 effluent exceedances, latest July 31, 2017, largest 44% over the limit.
  • Chlorine, total residual: 1 limit, 54 violations of any kind, 8 effluent exceedances, latest July 31, 2005, largest 200% over the limit.
  • Flow, in conduit or thru treatment plant: 4 limits, 198 violations of any kind, 0 effluent exceedances.
  • Solids, total suspended: 4 limits, 173 violations of any kind, 0 effluent exceedances.
  • Nitrogen, ammonia total [as N]: 4 limits, 173 violations of any kind, 0 effluent exceedances.
  • Phosphorus, total [as P]: 4 limits, 172 violations of any kind, 0 effluent exceedances.
  • BOD, carbonaceous [5 day, 20 C]: 4 limits, 169 violations of any kind, 0 effluent exceedances.
  • pH: 2 limits, 94 violations of any kind, 0 effluent exceedances.
  • August 20, 2026: Evaluation (S).
  • July 21, 2019: Reporting Violations - Late Submittal of DMRs (ST6).
  • October 21, 2018: Reporting Violations - Late Submittal of DMRs (ST6).

Michigan holds 200 Publicly owned treatment works coverages of this permit type in EPA’s file; 1 were issued before MI0025500.

Coverages issued nearest MI0025500

MILK RIVER CSO RTB among its neighbors

EPA’s permit file holds 49 discharge permits in the Clinton River Spillway-Frontal Lake Saint Clair subwatershed (HUC 040900020200), MI0025500 among them. Its county holds 179, 8 of them major permits; MI0025500 is a minor permit.

Other permits in the Clinton River Spillway-Frontal Lake Saint Clair subwatershed (HUC 040900020200)

Identity

Facility as filedMILK RIVER CSO RTB
Permittee as filedMilk River Intercounty Drainage Board
NPDES IDMI0025500
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 30, 2005
Expiration dateOctober 1, 2009
Issuing agencyState
AddressGrosse Pointe Woods, MI 48236
Receiving waterMilk River
Receiving water impaired303(D) Listed
SubwatershedClinton River Spillway-Frontal Lake Saint Clair (HUC 040900020200)
NAICS221320 – Sewage Treatment Facilities
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 general211131May 31, 201817,400% over the limit
Oxygen, dissolved [DO]15211July 31, 201744% over the limit
Chlorine, total residual1548July 31, 2005200% over the limit
Flow, in conduit or thru treatment plant41980
Solids, total suspended41730
Nitrogen, ammonia total [as N]41730
Phosphorus, total [as P]41720
BOD, carbonaceous [5 day, 20 C]41690
pH2940

Inspections, violations and enforcement

DateWhat EPA recordedAgency
July 21, 2019Reporting Violations - Late Submittal of DMRsST6
October 21, 2018Reporting Violations - Late Submittal of DMRsST6

Inspections

DateWhat EPA recordedAgency
August 20, 2026EvaluationS

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 MI0025500.

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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 Clean Water Act NPDES permit MI0025500 for MILK RIVER CSO RTB in Grosse Pointe Woods, MI, held by Milk River Intercounty Drainage Board, with its status listed as administratively continued. The page lists 9 as the discharger class, 3 pollutants under a numeric limit, and 3 pollutants with an effluent exceedance, and gives the subwatershed as HUC 040900020200.