Clean Water Act discharge permit · NPDES IA0033758

STANWOOD CITY OF STP, Stanwood, IA: NPDES IA0033758 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
7Pollutants under a numeric limit
4Pollutants with an effluent exceedance

STANWOOD CITY OF STP, held by CITY OF STANWOOD, holds NPDES permit IA0033758. EPA’s file records it issued October 1, 2021 and expiring September 30, 2026. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	STANWOOD CITY OF STP
Permittee as filed	CITY OF STANWOOD
NPDES ID	IA0033758
Permit status	Effective
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	October 1, 2021
Expiration date	September 30, 2026
Issuing agency	STA
Address	Stanwood, IA 52337
Subwatershed	West Rock Creek-Rock Creek (HUC 070802060301)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

7Pollutants on file
7Under a numeric limit
6With 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
BOD, carbonaceous [5 day, 20 C]	4	44	24	August 31, 2022	425% over the limit
Solids, total suspended	9	36	12	February 29, 2020	325% over the limit
pH	5	12	2	October 31, 2021
Nitrogen, ammonia total [as N]	48	13	1	January 31, 2024	14% over the limit
Oxygen, dissolved [DO]	1	5	0
E. coli	1	2	0
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 IA0033758.

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 IA0033758 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers the NPDES discharge permit IA0033758 for STANWOOD CITY OF STP in Stanwood, IA, held by CITY OF STANWOOD, with a status of Effective and an issue date of October 1, 2021 and expiration date of September 30, 2026. The page lists 7 pollutants on file, 6 of them under a numeric limit, and 4 with an effluent exceedance.