Clean Water Act discharge permit · NPDES IA0025925

GARWIN CITY OF STP, Garwin, IA: NPDES IA0025925 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
3Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

GARWIN CITY OF STP, held by CITY OF GARWIN, holds NPDES permit IA0025925. EPA’s file records it issued September 22, 2008 and expiring September 21, 2013.

GARWIN CITY OF STP, Garwin, Iowa: Individual permit IA0025925, held by CITY OF GARWIN; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 22, 2008, term to September 21, 2013, by STA; Sewage Treatment Facilities.

Flow, in conduit or thru treatment plant: 0 limits, 49 violations of any kind, 49 effluent exceedances, latest August 31, 2008, largest 433% over the limit.
pH: 0 limits, 5 violations of any kind, 5 effluent exceedances, latest August 31, 2025.
BOD, carbonaceous [5 day, 20 C]: 0 limits, 5 violations of any kind, 5 effluent exceedances, latest May 31, 2008, largest 28% over the limit.
Solids, total suspended: 0 limits, 2 violations of any kind, 0 effluent exceedances.

Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 35 were issued before IA0025925.

Coverages issued nearest IA0025925

September 18, 2007: SHELBY CITY OF STP, Shelby, IA0036579, held by CITY OF SHELBY
November 13, 2007: CONROY, IOWA - POWESHIEK WATER ASSOC, Marengo, IA0079901, held by POWESHIEK WATER ASSOCIATION
November 15, 2007: SHAMBAUGH CITY OF STP, Shambaugh, IA0069477, held by CITY OF SHAMBAUGH
August 6, 2008: LOCKRIDGE CITY OF STP, Lockridge, IA0072729, held by CITY OF LOCKRIDGE
September 19, 2008: LITTLE ROCK CITY OF STP, Little Rock, IA0025356, held by CITY OF LITTLE ROCK
December 15, 2008: UNIONVILLE, CITY OF STP, Unionville, IA0074373, held by Rathbun Rural Water Association
April 21, 2009: ANTHON CITY OF STP, Anthon, IA0042854, held by CITY OF ANTHON
September 4, 2009: SUN VALLEY SANITARY DISTRICT LAGOON, Ellston, IA0069469, held by SUN VALLEY SANITARY DISTRICT
September 22, 2009: WEBSTER, CITY OF STP, Webster, IA0078719, held by REGIONAL UTILITY SERVICE SYSTEMS
September 22, 2009: MARTINSBURG, CITY OF STP, Martinsburg, IA0078727, held by REGIONAL UTILITY SERVICE SYSTEMS

GARWIN CITY OF STP among its neighbors

EPA’s permit file holds 1 discharge permits in the Headwaters Deer Creek subwatershed (HUC 070802080301), IA0025925 among them. Its county holds 15, 3 of them major permits; IA0025925 is a minor permit.

Identity

Facility as filed	GARWIN CITY OF STP
Permittee as filed	CITY OF GARWIN
NPDES ID	IA0025925
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	September 22, 2008
Expiration date	September 21, 2013
Issuing agency	STA
Address	Garwin, IA 50632
Subwatershed	Headwaters Deer Creek (HUC 070802080301)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems
Other EPA IDs (FRS)	RCRA handler IAD000154021

Effluent limits and exceedances

4Pollutants on file
0Under a numeric limit
4With a violation of any kind
3With 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	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Flow, in conduit or thru treatment plant	49	49	August 31, 2008	433% over the limit
pH	5	5	August 31, 2025
BOD, carbonaceous [5 day, 20 C]	5	5	May 31, 2008	28% over the limit
Solids, total suspended	2	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0025925.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0025925.

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 IA0025925.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IA0025925.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

This public-records page covers NPDES permit IA0025925 for GARWIN CITY OF STP in Garwin, IA, held by CITY OF GARWIN and administratively continued past its expiration date. The facts list 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance, with the permit classed as a minor discharger in the Headwaters Deer Creek (HUC 070802080301) subwatershed.