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NPDES IN0039870 · Clean Water Act

CLAYPOOL WWTP, Claypool, IN: NPDES IN0039870 discharge permit, effluent exceedances, inspections, penalties

CLAYPOOL WWTP, Claypool, Indiana: Individual permit IN0039870; Publicly owned treatment works; Administratively continued; issued November 12, 2020, term to May 31, 2026, by IDEM; discharges to MILLSTONE CREEK.

2 of the 17 pollutants listed for NPDES IN0039870 have no violation or effluent exceedance.

  • Nitrogen, ammonia total [as N]: 4 limits, 41 violations of any kind, 35 effluent exceedances, latest March 31, 2026, largest 326% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 2 limits, 37 violations of any kind, 31 effluent exceedances, latest July 31, 2026, largest 72% over the limit.
  • Solids, suspended percent removal: 0 limits, 25 violations of any kind, 25 effluent exceedances, latest May 31, 2016, largest 293% over the limit.
  • Solids, total suspended: 2 limits, 10 violations of any kind, 3 effluent exceedances, latest June 30, 2017, largest 19% over the limit.
  • Chlorine, total residual: 4 limits, 3 violations of any kind, 3 effluent exceedances, latest September 30, 2015, largest 84% over the limit.
  • E. coli, colony forming units [CFU]: 2 limits, 3 violations of any kind, 1 effluent exceedance, latest June 30, 2020, largest 20% over the limit.
  • BOD, carb-5 day, 20 deg C, percent removal: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest July 31, 2014, largest 40% over the limit.
  • Flow, in conduit or thru treatment plant: 2 limits, 14 violations of any kind.
  • Streamflow: 1 limit, 7 violations of any kind.
  • pH: 2 limits, 6 violations of any kind.
  • Dilution factor: 1 limit, 3 violations of any kind.
  • Chloride [as Cl]: 0 limits, 2 violations of any kind.
  • Zinc, total recoverable: 0 limits, 2 violations of any kind.
  • Lead, total recoverable: 0 limits, 2 violations of any kind.
  • Copper, total recoverable: 0 limits, 2 violations of any kind.
  • Phosphorus, total [as P]: 2 limits.
  • Flow, total: 1 limit.

Indiana holds 541 Publicly owned treatment works coverages of this permit type in EPA’s file; 478 were issued before IN0039870.

Coverages issued nearest IN0039870

CLAYPOOL WWTP among its neighbors

3 discharge permits are in the Adams Ditch-Trimble Creek subwatershed (HUC 051201060301); IN0039870 is one. Its county: 86, 5 major; IN0039870 is minor permit.

Other permits in the Adams Ditch-Trimble Creek subwatershed (HUC 051201060301)

Identity

FacilityCLAYPOOL WWTP
PermitteeCLAYPOOL WWTP
NPDES IDIN0039870
StatusAdministratively continued
TypeIndividual permit
ClassMinor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedNovember 12, 2020
ExpiresMay 31, 2026
AgencyIDEM
AddressClaypool, IN 46510
Receiving waterMILLSTONE CREEK
SubwatershedAdams Ditch-Trimble Creek (HUC 051201060301)
SIC4952 – Sewerage Systems

NPDES IN0039870: effluent limits and exceedances

CLAYPOOL WWTP (NPDES IN0039870): 17 pollutants on file, 11 limited; 15 with a violation of any kind, 7 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
Nitrogen, ammonia total [as N]44135March 31, 2026326% over the limit
BOD, carbonaceous [5 day, 20 C]23731July 31, 202672% over the limit
Solids, suspended percent removal02525May 31, 2016293% over the limit
Solids, total suspended2103June 30, 201719% over the limit
Chlorine, total residual433September 30, 201584% over the limit
E. coli, colony forming units [CFU]231June 30, 202020% over the limit
BOD, carb-5 day, 20 deg C, percent removal011July 31, 201440% over the limit
Flow, in conduit or thru treatment plant2140
Streamflow170
pH260
Dilution factor130
Chloride [as Cl]020
Zinc, total recoverable020
Lead, total recoverable020
Copper, total recoverable020
Phosphorus, total [as P]200
Flow, total100

NPDES IN0039870: inspections, violations and enforcement

NPDES IN0039870 (CLAYPOOL WWTP): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES IN0039870

NPDES IN0039870: 17 pollutant rows, 0 dated events; ICIS-NPDES download, loaded October 14, 2026.