Clean Water Act discharge permit · NPDES IA0043150

HUMESTON CITY OF STP, Humeston, IA: NPDES IA0043150 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
5Pollutants under a numeric limit
4Pollutants with an effluent exceedance

HUMESTON CITY OF STP, held by CITY OF HUMESTON, holds NPDES permit IA0043150. EPA’s file records it issued August 1, 2017 and expiring July 31, 2022. 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 filed	HUMESTON CITY OF STP
Permittee as filed	CITY OF HUMESTON
NPDES ID	IA0043150
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	August 1, 2017
Expiration date	July 31, 2022
Issuing agency	STA
Address	Humeston, IA 50123
Subwatershed	Brush Creek-Chariton River (HUC 102802010202)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – 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

5Pollutants on file
5Under a numeric limit
4With a violation of any kind
4With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
pH	5	43	36	May 31, 2026
BOD, carbonaceous [5 day, 20 C]	4	23	11	March 31, 2026	315% over the limit
Solids, total suspended	9	29	9	May 31, 2026	46% over the limit
Nitrogen, ammonia total [as N]	48	14	6	May 31, 2025	240% over the limit
BOD, 5-day, 20 deg. C	5	0	0

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0043150.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

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 IA0043150 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES IA0043150 for HUMESTON CITY OF STP in Humeston, IA, held by CITY OF HUMESTON and administratively continued past its July 31, 2022 expiration date. The permit is a minor discharger class permit, with 4 pollutants under a numeric limit and 4 pollutants with an effluent exceedance listed.