Clean Water Act discharge permit · NPDES IA0028983

COON RAPIDS CITY OF STP, Coon Rapids, IA: NPDES IA0028983 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
4Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

COON RAPIDS CITY OF STP, held by CITY OF COON RAPIDS, holds NPDES permit IA0028983. EPA’s file records it issued February 1, 2019 and expiring January 31, 2024.

COON RAPIDS CITY OF STP, Coon Rapids, Iowa: Individual permit IA0028983, held by CITY OF COON RAPIDS; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued February 1, 2019, term to January 31, 2024, by STA.

pH: 7 limits, 19 violations of any kind, 15 effluent exceedances, latest May 31, 2024.
Solids, total suspended: 12 limits, 9 violations of any kind, 6 effluent exceedances, latest June 30, 2024, largest 89% over the limit.
BOD, carbonaceous [5 day, 20 C]: 7 limits, 7 violations of any kind, 4 effluent exceedances, latest May 31, 2017, largest 40% over the limit.
Flow, in conduit or thru treatment plant: 0 limits, 1 violation of any kind, 1 effluent exceedance, latest May 31, 2004, largest 37% over the limit.
Nitrogen, Kjeldahl, total [as N]: 10 limits, 12 violations of any kind, 0 effluent exceedances.
E. coli: 8 limits, 0 violations of any kind, 0 effluent exceedances.
BOD, 5-day, 20 deg. C: 5 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia total [as N]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
Depth of pond or reservoir in feet: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Nitrogen, total Kjeldahl: 1 limit, 0 violations of any kind, 0 effluent exceedances.

Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 412 were issued before IA0028983.

Coverages issued nearest IA0028983

December 1, 2018: DIAGONAL CITY OF STP, Diagonal, IA0063401, held by CITY OF DIAGONAL
January 1, 2019: APLINGTON CITY OF STP, Aplington, IA0035050, held by CITY OF APLINGTON
January 1, 2019: HORNICK CITY OF STP, Hornick, IA0036501, held by CITY OF HORNICK
January 1, 2019: MURRAY CITY OF STP, Murray, IA0063304
February 1, 2019: HARLAN CITY OF STP, Harlan, IA0021342, held by CITY OF HARLAN
February 1, 2019: CHURDAN CITY OF STP, Churdan, IA0031216, held by CITY OF CHURDAN
February 1, 2019: WEST LIBERTY CITY OF STP, West Liberty, IA0031691, held by CITY OF WEST LIBERTY
February 1, 2019: TROY MILLS SANITARY DISTRICT, Troy Mills, IA0041262
February 1, 2019: WELTON CITY OF STP, Welton, IA0071196, held by CITY OF WELTON
February 1, 2019: FORT ATKINSON CITY OF STP, Fort Atkinson, IA0072176, held by CITY OF FORT ATKINSON

COON RAPIDS CITY OF STP among its neighbors

EPA’s permit file holds 3 discharge permits in the Willey Branch-Middle Raccoon River subwatershed (HUC 071000070205), IA0028983 among them. Its county holds 16, 0 of them major permits; IA0028983 is a minor permit.

Other permits in the Willey Branch-Middle Raccoon River subwatershed (HUC 071000070205)

COON RAPIDS MUNICIPAL UTILITIES WTP, Coon Rapids: IA0049692, minor permit, permit term to December 31, 2024
WENDL FEEDLOT, Carroll: IA0077810, minor permit, permit term to March 31, 2022

Identity

Facility as filed	COON RAPIDS CITY OF STP
Permittee as filed	CITY OF COON RAPIDS
NPDES ID	IA0028983
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	February 1, 2019
Expiration date	January 31, 2024
Issuing agency	STA
Address	Coon Rapids, IA 50058
Subwatershed	Willey Branch-Middle Raccoon River (HUC 071000070205)

Effluent limits and exceedances

10Pollutants on file
9Under a numeric limit
5With 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	7	19	15	May 31, 2024
Solids, total suspended	12	9	6	June 30, 2024	89% over the limit
BOD, carbonaceous [5 day, 20 C]	7	7	4	May 31, 2017	40% over the limit
Flow, in conduit or thru treatment plant	0	1	1	May 31, 2004	37% over the limit
Nitrogen, Kjeldahl, total [as N]	10	12	0
E. coli	8	0	0
BOD, 5-day, 20 deg. C	5	0	0
Nitrogen, ammonia total [as N]	5	0	0
Depth of pond or reservoir in feet	3	0	0
Nitrogen, total Kjeldahl	1	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0028983.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0028983.

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 IA0028983.

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

This public-records page covers NPDES permit IA0028983 for COON RAPIDS CITY OF STP in Coon Rapids, IA, held by CITY OF COON RAPIDS, with its status shown as administratively continued and its discharger class as minor. The facts list 10 pollutants on file, 9 under a numeric limit, 5 with a violation of any kind, and 4 with an effluent exceedance.