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Clean Water Act discharge permit · NPDES IA0032727

TIPTON CITY OF STP, Tipton, IA: NPDES IA0032727 discharge permit, effluent exceedances, inspections, penalties

TIPTON CITY OF STP, held by CITY OF TIPTON (WEST), holds NPDES permit IA0032727. EPA’s file records it issued June 1, 2016 and expiring May 31, 2021.

TIPTON CITY OF STP, Tipton, Iowa: Individual permit IA0032727, held by CITY OF TIPTON (WEST); Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued June 1, 2016, term to May 31, 2021, by STA; Sewage Treatment Facilities.

  • Nitrogen, ammonia total [as N]: 48 limits, 8 violations of any kind, 4 effluent exceedances, latest December 31, 2025, largest 121% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 4 limits, 2 violations of any kind, 2 effluent exceedances, latest February 28, 2021, largest 110% over the limit.
  • Solids, total suspended: 9 limits, 8 violations of any kind, 0 effluent exceedances.
  • Toxicity [acute], Ceriodaphnia dubia: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • Toxicity [acute], Pimephales promelas [Fathead Minnow]: 1 limit, 6 violations of any kind, 0 effluent exceedances.
  • Nitrogen, total [as N]: 10 limits, 0 violations of any kind, 0 effluent exceedances.
  • Phosphorus, total [as P]: 10 limits, 0 violations of any kind, 0 effluent exceedances.
  • BOD, 5-day, 20 deg. C: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • pH: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Chromium, hexavalent [as Cr]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Nickel, total [as Ni]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
  • Copper, total [as Cu]: 4 limits, 0 violations of any kind, 0 effluent exceedances.
  • Thallium, total [as Tl]: 4 limits, 0 violations of any kind, 0 effluent exceedances.

Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 133 were issued before IA0032727. CITY OF TIPTON (WEST) holds 2 permits in Iowa.

Other permits held by CITY OF TIPTON (WEST)

Coverages issued nearest IA0032727

TIPTON CITY OF STP among its neighbors

EPA’s permit file holds 4 discharge permits in the Crooked Creek subwatershed (HUC 070802060801), IA0032727 among them. Its county holds 11, 1 of them major permits; IA0032727 is a major permit.

Other permits in the Crooked Creek subwatershed (HUC 070802060801)

Identity

Facility as filedTIPTON CITY OF STP
Permittee as filedCITY OF TIPTON (WEST)
NPDES IDIA0032727
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedJune 1, 2016
Expiration dateMay 31, 2021
Issuing agencySTA
AddressTipton, IA 52772
SubwatershedCrooked Creek (HUC 070802060801)
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
Nitrogen, ammonia total [as N]4884December 31, 2025121% over the limit
BOD, carbonaceous [5 day, 20 C]422February 28, 2021110% over the limit
Solids, total suspended980
Toxicity [acute], Ceriodaphnia dubia160
Toxicity [acute], Pimephales promelas [Fathead Minnow]160
Nitrogen, total [as N]1000
Phosphorus, total [as P]1000
BOD, 5-day, 20 deg. C500
pH500
Chromium, hexavalent [as Cr]500
Nickel, total [as Ni]500
Copper, total [as Cu]400
Thallium, total [as Tl]400

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0032727.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0032727.

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 IA0032727.

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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 IA0032727 for TIPTON CITY OF STP in Tipton, IA, held by CITY OF TIPTON (WEST), with its permit status listed as administratively continued and its discharger class as Major Discharger. The page lists 13 pollutants on file, 2 of which are under a numeric limit and 2 of which have an effluent exceedance, with the permit recorded as issued June 1, 2016 and expiring May 31, 2021.