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Clean Water Act discharge permit · NPDES IN0022683

CROTHERSVILLE WWTP, Crothersville, IN: NPDES IN0022683 discharge permit, effluent exceedances, inspections, penalties

CROTHERSVILLE WWTP holds NPDES permit IN0022683, which discharges to Muscatatuck R Via Grassy Cr - Hominy (Nehrt) Ditch. EPA’s file records it issued September 5, 2019 and expiring October 31, 2024.

CROTHERSVILLE WWTP, Crothersville, Indiana: Individual permit IN0022683; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 5, 2019, term to October 31, 2024, by IDEM; discharges to MUSCATATUCK R VIA GRASSY CR - HOMINY (NEHRT) DITCH.

  • Nitrogen, ammonia total [as N]: 8 limits, 38 violations of any kind, 18 effluent exceedances, latest August 31, 2018, largest 1,092% over the limit.
  • Solids, total suspended: 12 limits, 28 violations of any kind, 8 effluent exceedances, latest January 31, 2024, largest 134% over the limit.
  • Chlorine, total residual: 4 limits, 16 violations of any kind, 6 effluent exceedances, latest October 31, 2013, largest 1,067% over the limit.
  • E. coli, colony forming units [CFU]: 7 limits, 14 violations of any kind, 4 effluent exceedances, latest July 31, 2024, largest 283% over the limit.
  • Toxicity [chronic], Ceriodaphnia dubia: 3 limits, 3 violations of any kind, 3 effluent exceedances, latest October 31, 2026, largest 120% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 12 limits, 23 violations of any kind, 1 effluent exceedance, latest August 31, 2004, largest 25,395% over the limit.
  • pH: 6 limits, 17 violations of any kind, 1 effluent exceedance, latest August 31, 2018.
  • Oxygen, dissolved [DO]: 2 limits, 16 violations of any kind, 0 effluent exceedances.
  • Flow, in conduit or thru treatment plant: 9 limits, 12 violations of any kind, 0 effluent exceedances.
  • Flow, total: 3 limits, 4 violations of any kind, 0 effluent exceedances.
  • Duration: 1 limit, 4 violations of any kind, 0 effluent exceedances.
  • Overflow volume [SS0 volume, CSO volume]: 1 limit, 4 violations of any kind, 0 effluent exceedances.
  • Discharge event observation [Visual Monitoring]: 1 limit, 4 violations of any kind, 0 effluent exceedances.
  • Flow, wastewater by-passing trtmnt plant: 0 limits, 2 violations of any kind, 0 effluent exceedances.
  • Precipitation, monthly accumulation: 1 limit, 1 violation of any kind, 0 effluent exceedances.
  • Phosphorus, total [as P]: 0 limits, 1 violation of any kind, 0 effluent exceedances.
  • Oil and grease, hexane extr method: 4 limits, 0 violations of any kind, 0 effluent exceedances.
  • Zinc, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
  • Aluminum, total recoverable: 4 limits, 0 violations of any kind, 0 effluent exceedances.
  • Toxicity [acute], Ceriodaphnia dubia: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Toxicity [acute], Pimephales promelas [Fathead Minnow]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Toxicity [chronic], Pimephales promelas [Fathead Minnow]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Copper, dry weight: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Cadmium, dry weight: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Number of Events: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Molybdenum, sludge, total, dry weight [as Mo]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Zinc, sludge, total, dry weight [as Zn]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Lead, sludge, total, dry weight [as Pb]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Nickel, sludge, total, dry weight [as Ni]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • Mercury, sludge, total, dry weight [as Hg]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
  • April 1, 2026: Plan Review (S).
  • March 23, 2026: Evaluation (S).
  • March 23, 2026: Evaluation (S).

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 332 were issued before IN0022683.

Coverages issued nearest IN0022683

CROTHERSVILLE WWTP among its neighbors

EPA’s permit file holds 7 discharge permits in the Grassy Creek-Vernon Fork Muscatatuck River subwatershed (HUC 051202070706), IN0022683 among them. Its county holds 44, 1 of them major permits; IN0022683 is a minor permit.

Other permits in the Grassy Creek-Vernon Fork Muscatatuck River subwatershed (HUC 051202070706)

Identity

Facility as filedCROTHERSVILLE WWTP
Permittee as filedCROTHERSVILLE WWTP
NPDES IDIN0022683
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 5, 2019
Expiration dateOctober 31, 2024
Issuing agencyIDEM
AddressCrothersville, IN 47229
Receiving waterMUSCATATUCK R VIA GRASSY CR - HOMINY (NEHRT) DITCH
SubwatershedGrassy Creek-Vernon Fork Muscatatuck River (HUC 051202070706)
Program components on fileCSO, POTW, Pretreatment
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
Nitrogen, ammonia total [as N]83818August 31, 20181,092% over the limit
Solids, total suspended12288January 31, 2024134% over the limit
Chlorine, total residual4166October 31, 20131,067% over the limit
E. coli, colony forming units [CFU]7144July 31, 2024283% over the limit
Toxicity [chronic], Ceriodaphnia dubia333October 31, 2026 (as filed; later than the file's load date)120% over the limit
BOD, carbonaceous [5 day, 20 C]12231August 31, 200425,395% over the limit
pH6171August 31, 2018
Oxygen, dissolved [DO]2160
Flow, in conduit or thru treatment plant9120
Flow, total340
Duration140
Overflow volume [SS0 volume, CSO volume]140
Discharge event observation [Visual Monitoring]140
Flow, wastewater by-passing trtmnt plant020
Precipitation, monthly accumulation110
Phosphorus, total [as P]010
Oil and grease, hexane extr method400
Zinc, total recoverable400
Aluminum, total recoverable400
Toxicity [acute], Ceriodaphnia dubia300
Toxicity [acute], Pimephales promelas [Fathead Minnow]300
Toxicity [chronic], Pimephales promelas [Fathead Minnow]300
Copper, dry weight200
Cadmium, dry weight200
Number of Events200
Molybdenum, sludge, total, dry weight [as Mo]200
Zinc, sludge, total, dry weight [as Zn]200
Lead, sludge, total, dry weight [as Pb]200
Nickel, sludge, total, dry weight [as Ni]200
Mercury, sludge, total, dry weight [as Hg]200

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IN0022683.

Inspections

DateWhat EPA recordedAgency
April 1, 2026Plan ReviewS
March 23, 2026EvaluationS
March 23, 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 IN0022683.

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Nearby on the register

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

What this page shows

The Velarion Records page covers NPDES permit IN0022683 for the CROTHERSVILLE WWTP in Crothersville, IN, which discharges to Muscatatuck R Via Grassy Cr - Hominy (Nehrt) Ditch, with the permit listed as administratively continued and a minor discharger class. The page lists 28 pollutants under a numeric limit and 7 pollutants with an effluent exceedance.