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NPDES IA0041831 · Clean Water Act

AFTON CITY OF STP, Afton, IA: NPDES IA0041831 discharge permit, effluent exceedances, inspections, penalties

AFTON CITY OF STP, Afton, Iowa: Individual permit IA0041831, held by CITY OF AFTON; Publicly owned treatment works; Effective; issued October 1, 2017, term to September 30, 2022, by STA.

4 of the 7 pollutants listed for NPDES IA0041831 have no violation or effluent exceedance.

  • pH: 5 limits, 13 violations of any kind, 3 effluent exceedances, latest October 31, 2021.
  • BOD, carbonaceous [5 day, 20 C]: 5 limits, 23 violations of any kind.
  • Solids, total suspended: 10 limits, 17 violations of any kind.
  • Nitrogen, ammonia total [as N]: 48 limits.
  • BOD, 5-day, 20 deg. C: 5 limits.
  • E. coli: 3 limits.
  • Depth of pond or reservoir in feet: 3 limits.

Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 273 were issued before IA0041831. CITY OF AFTON holds 2 permits in Iowa.

Other permits held by CITY OF AFTON

Coverages issued nearest IA0041831

AFTON CITY OF STP among its neighbors

Its county: 9, 1 major; IA0041831 is minor permit.

Other permits in the county

Identity

FacilityAFTON CITY OF STP
PermitteeCITY OF AFTON
NPDES IDIA0041831
StatusEffective
TypeIndividual permit
ClassMinor
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedOctober 1, 2017
ExpiresSeptember 30, 2022
AgencySTA
AddressAfton, IA 50830

NPDES IA0041831: effluent limits and exceedances

AFTON CITY OF STP (NPDES IA0041831): 7 pollutants on file, 7 limited; 3 with a violation of any kind, 1 with an exceedance.

How exceedances are counted.

PollutantLimitsViolationsExceedancesLatestLargest, as filed
pH5133October 31, 2021
BOD, carbonaceous [5 day, 20 C]5230
Solids, total suspended10170
Nitrogen, ammonia total [as N]4800
BOD, 5-day, 20 deg. C500
E. coli300
Depth of pond or reservoir in feet300

NPDES IA0041831: inspections, violations and enforcement

NPDES IA0041831 (AFTON CITY OF STP): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.

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Permits near NPDES IA0041831

NPDES IA0041831: 7 pollutant rows, 0 dated events; ICIS-NPDES download, loaded September 15, 2026.