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Clean Water Act discharge permit · NPDES IN0023787

MITCHELL WASTEWATER TREATMENT PLANT, Mitchell, IN: NPDES IN0023787 discharge permit, effluent exceedances, inspections, penalties

MITCHELL WASTEWATER TREATMENT PLANT holds NPDES permit IN0023787, which discharges to Rock Lick Branch To E Fk White Riv. EPA’s file records it issued June 15, 2018 and expiring October 31, 2023.

MITCHELL WASTEWATER TREATMENT PLANT, Mitchell, Indiana: Individual permit IN0023787; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued June 15, 2018, term to October 31, 2023, by IDEM; discharges to ROCK LICK BRANCH TO E FK WHITE RIV.

  • Phosphorus, total [as P]: 1 limit, 14 violations of any kind, 10 effluent exceedances, latest October 31, 2010, largest 90% over the limit.
  • Nitrogen, ammonia total [as N]: 8 limits, 26 violations of any kind, 9 effluent exceedances, latest February 28, 2005, largest 272% over the limit.
  • Solids, total suspended: 8 limits, 25 violations of any kind, 9 effluent exceedances, latest March 31, 2008, largest 684% over the limit.
  • Chlorine, total residual: 4 limits, 11 violations of any kind, 6 effluent exceedances, latest July 31, 2015, largest 3,233% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 8 limits, 16 violations of any kind, 0 effluent exceedances.
  • pH: 2 limits, 9 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 2 limits, 8 violations of any kind, 0 effluent exceedances.
  • Oxygen, dissolved [DO]: 2 limits, 4 violations of any kind, 0 effluent exceedances.
  • Phosphorus, total percent removal: 1 limit, 3 violations of any kind, 0 effluent exceedances.
  • Flow, wastewater by-passing trtmnt plant: 0 limits, 3 violations of any kind, 0 effluent exceedances.
  • E. coli, colony forming units [CFU]: 3 limits, 2 violations of any kind, 0 effluent exceedances.
  • Flow, total: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Number of Events: 2 limits, 0 violations of any kind, 0 effluent exceedances.

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 203 were issued before IN0023787.

Coverages issued nearest IN0023787

MITCHELL WASTEWATER TREATMENT PLANT among its neighbors

EPA’s permit file holds 15 discharge permits in the Rock Lick Branch-East Fork White River subwatershed (HUC 051202080304), IN0023787 among them. Its county holds 49, 2 of them major permits; IN0023787 is a minor permit.

Other permits in the Rock Lick Branch-East Fork White River subwatershed (HUC 051202080304)

Identity

Facility as filedMITCHELL WASTEWATER TREATMENT PLANT
Permittee as filedMITCHELL WASTEWATER TREATMENT PLANT
NPDES IDIN0023787
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
IssuedJune 15, 2018
Expiration dateOctober 31, 2023
Issuing agencyIDEM
AddressMitchell, IN 47446
Receiving waterROCK LICK BRANCH TO E FK WHITE RIV
SubwatershedRock Lick Branch-East Fork White River (HUC 051202080304)
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
Phosphorus, total [as P]11410October 31, 201090% over the limit
Nitrogen, ammonia total [as N]8269February 28, 2005272% over the limit
Solids, total suspended8259March 31, 2008684% over the limit
Chlorine, total residual4116July 31, 20153,233% over the limit
BOD, carbonaceous [5 day, 20 C]8160
pH290
Flow, in conduit or thru treatment plant280
Oxygen, dissolved [DO]240
Phosphorus, total percent removal130
Flow, wastewater by-passing trtmnt plant030
E. coli, colony forming units [CFU]320
Flow, total110
Number of Events200

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0023787.

Inspections

EPA’s inspection file holds no inspection for NPDES IN0023787.

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 IN0023787.

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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 discharge permit IN0023787 for the Mitchell Wastewater Treatment Plant in Mitchell, IN, which discharges to Rock Lick Branch To E Fk White Riv and is listed as administratively continued with a minor discharger class. The page lists 12 pollutants under a numeric limit and 4 pollutants with an effluent exceedance, with the permit recorded as issued June 15, 2018 and expiring October 31, 2023.