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Clean Water Act discharge permit · NPDES IA0028614

MCGREGOR CITY OF STP, Mcgregor, IA: NPDES IA0028614 discharge permit, effluent exceedances, inspections, penalties

MCGREGOR CITY OF STP, held by CITY OF MCGREGOR, holds NPDES permit IA0028614. EPA’s file records it issued May 1, 2017 and expiring April 30, 2022.

MCGREGOR CITY OF STP, Mcgregor, Iowa: Individual permit IA0028614, held by CITY OF MCGREGOR; 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.

  • E. coli: 0 limits, 24 violations of any kind, 8 effluent exceedances, latest May 31, 2025, largest 930% over the limit.
  • Chlorine, total residual: 4 limits, 61 violations of any kind, 7 effluent exceedances, latest June 30, 2026, largest 155% over the limit.
  • pH: 5 limits, 13 violations of any kind, 7 effluent exceedances, latest December 31, 2018.
  • Solids, total suspended: 9 limits, 19 violations of any kind, 5 effluent exceedances, latest April 30, 2023, largest 44% over the limit.
  • BOD, carbonaceous [5 day, 20 C]: 4 limits, 12 violations of any kind, 1 effluent exceedance, latest August 31, 2008, largest 76% over the limit.
  • Coliform, fecal general: 0 limits, 2 violations of any kind, 0 effluent exceedances.
  • BOD, 5-day, 20 deg. C: 5 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; 216 were issued before IA0028614.

Coverages issued nearest IA0028614

MCGREGOR CITY OF STP among its neighbors

EPA’s permit file holds 8 discharge permits in the City of Prairie du Chien-Mississippi River subwatershed (HUC 070600011003), IA0028614 among them. Its county holds 17, 0 of them major permits; IA0028614 is a minor permit.

Other permits in the City of Prairie du Chien-Mississippi River subwatershed (HUC 070600011003)

Identity

Facility as filedMCGREGOR CITY OF STP
Permittee as filedCITY OF MCGREGOR
NPDES IDIA0028614
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
AddressMcgregor, IA 52157
Receiving water impaired303(D) Listed
SubwatershedCity of Prairie du Chien-Mississippi River (HUC 070600011003)
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
E. coli0248May 31, 2025930% over the limit
Chlorine, total residual4617June 30, 2026155% over the limit
pH5137December 31, 2018
Solids, total suspended9195April 30, 202344% over the limit
BOD, carbonaceous [5 day, 20 C]4121August 31, 200876% over the limit
Coliform, fecal general020
BOD, 5-day, 20 deg. C500

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0028614.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0028614.

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 IA0028614.

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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 NPDES permit IA0028614 for MCGREGOR CITY OF STP in Mcgregor, IA, held by CITY OF MCGREGOR and administratively continued past its April 30, 2022 expiration date. The listed figures are 5 pollutants under a numeric limit and 5 pollutants with an effluent exceedance, with the facility classed as a Minor Discharger.