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Clean Water Act discharge permit · NPDES IA0041947

MONROE CITY OF STP (EAST), Monroe, IA: NPDES IA0041947 discharge permit, effluent exceedances, inspections, penalties

MONROE CITY OF STP (EAST), held by CITY OF MONROE, holds NPDES permit IA0041947. EPA’s file records it issued September 1, 2020 and expiring August 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMONROE CITY OF STP (EAST)
Permittee as filedCITY OF MONROE
NPDES IDIA0041947
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
IssuedSeptember 1, 2020
Expiration dateAugust 31, 2025
Issuing agencySTA
AddressMonroe, IA 50170
SubwatershedCarson Creek-South Skunk River (HUC 070801051104)
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

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 plant05555October 31, 2014433% over the limit
Oxygen, dissolved [DO]12824February 28, 202676% over the limit
Nitrogen, ammonia total [as N]481313March 31, 2025245% over the limit
BOD, carbonaceous [5 day, 20 C]4175March 31, 201529% over the limit
pH573February 28, 2025
Solids, total suspended9180
BOD, 5-day, 20 deg. C500
E. coli100

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0041947.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0041947.

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 IA0041947.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IA0041947 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers NPDES permit IA0041947 for the MONROE CITY OF STP (EAST) in Monroe, IA, held by CITY OF MONROE, a minor discharger under an administratively continued individual permit in the Carson Creek-South Skunk River (HUC 070801051104) subwatershed. The page lists 7 pollutants under a numeric limit and 5 pollutants with an effluent exceedance.