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Clean Water Act discharge permit · NPDES IA0020940

LYTTON CITY OF STP, Lytton, IA: NPDES IA0020940 discharge permit, effluent exceedances, inspections, penalties

LYTTON CITY OF STP, held by CITY OF LYTTON, holds NPDES permit IA0020940. EPA’s file records it issued May 1, 2017 and expiring April 30, 2022.

LYTTON CITY OF STP, Lytton, Iowa: Individual permit IA0020940, held by CITY OF LYTTON; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued May 1, 2017, term to April 30, 2022, by STA; Sewage Treatment Facilities.

  • Flow, in conduit or thru treatment plant: 0 limits, 55 violations of any kind, 55 effluent exceedances, latest March 31, 2017, largest 451,845% over the limit.
  • Chloride [as Cl]: 4 limits, 39 violations of any kind, 39 effluent exceedances, latest June 30, 2026, largest 486% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 5 limits, 12 violations of any kind, 10 effluent exceedances, latest May 31, 2026, largest 156% over the limit.
  • Solids, total suspended: 10 limits, 3 violations of any kind, 1 effluent exceedance, latest November 30, 2025, largest 5% over the limit.
  • pH: 5 limits, 1 violation of any kind, 1 effluent exceedance, latest April 30, 2004.
  • BOD, 5-day, 20 deg. C: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Nitrogen, ammonia total [as N]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Nitrogen, Kjeldahl, total [as N]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Sulfate, total [as SO4]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • E. coli: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • Depth of pond or reservoir in feet: 3 limits, 0 violations of any kind, 0 effluent exceedances.
  • January 9, 2026: State CWA Penalty AO (State), $2,000 state or local penalty.

Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 216 were issued before IA0020940.

Coverages issued nearest IA0020940

LYTTON CITY OF STP among its neighbors

EPA’s permit file holds 1 discharge permits in the West Fork Camp Creek subwatershed (HUC 071000060503), IA0020940 among them. Its county holds 11, 0 of them major permits; IA0020940 is a minor permit.

Identity

Facility as filedLYTTON CITY OF STP
Permittee as filedCITY OF LYTTON
NPDES IDIA0020940
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
IssuedMay 1, 2017
Expiration dateApril 30, 2022
Issuing agencySTA
AddressLytton, IA 50561
SubwatershedWest Fork Camp Creek (HUC 071000060503)
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
Flow, in conduit or thru treatment plant05555March 31, 2017451,845% over the limit
Chloride [as Cl]43939June 30, 2026486% over the limit
BOD, carbonaceous [5 day, 20 C]51210May 31, 2026156% over the limit
Solids, total suspended1031November 30, 20255% over the limit
pH511April 30, 2004
BOD, 5-day, 20 deg. C500
Nitrogen, ammonia total [as N]500
Nitrogen, Kjeldahl, total [as N]500
Sulfate, total [as SO4]500
E. coli300
Depth of pond or reservoir in feet300

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0020940.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0020940.

Formal enforcement and penalties

1 formal actions, 1 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.

DateWhat EPA recordedAgencyFederal penaltyState or local penalty
January 9, 2026State CWA Penalty AOState$2,000

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES IA0020940.

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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 discharge permit NPDES IA0020940 for LYTTON CITY OF STP in Lytton, IA, held by CITY OF LYTTON, with a permit status of administratively continued and a discharger class of minor. The file lists 11 pollutants on file, 10 of them under a numeric limit, and 5 pollutants with an effluent exceedance.