Clean Water Act discharge permit · NPDES IA0023311

DIKE CITY OF STP, Dike, IA: NPDES IA0023311 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
8Pollutants under a numeric limit
6Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

DIKE CITY OF STP, held by CITY OF DIKE, holds NPDES permit IA0023311. EPA’s file records it issued September 1, 2020 and expiring August 31, 2025.

DIKE CITY OF STP, Dike, Iowa: Individual permit IA0023311, held by CITY OF DIKE; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued September 1, 2020, term to August 31, 2025, by STA; Sewage Treatment Facilities.

Flow, in conduit or thru treatment plant: 0 limits, 46 violations of any kind, 36 effluent exceedances, latest June 30, 2020, largest 315% over the limit.
Solids, total suspended: 9 limits, 44 violations of any kind, 12 effluent exceedances, latest July 31, 2026, largest 296% over the limit.
pH: 5 limits, 13 violations of any kind, 4 effluent exceedances, latest February 28, 2013.
Nitrogen, ammonia total [as N]: 48 limits, 10 violations of any kind, 2 effluent exceedances, latest January 31, 2021, largest 47% over the limit.
Nitrogen, total [as N]: 2 limits, 4 violations of any kind, 1 effluent exceedance, latest May 31, 2022, largest 11% over the limit.
Oxygen, dissolved [DO]: 1 limit, 4 violations of any kind, 1 effluent exceedance, latest February 28, 2023, largest 7% over the limit.
BOD, carbonaceous [5 day, 20 C]: 4 limits, 18 violations of any kind, 0 effluent exceedances.
E. coli: 1 limit, 1 violation of any kind, 0 effluent exceedances.
BOD, 5-day, 20 deg. C: 5 limits, 0 violations of any kind, 0 effluent exceedances.

Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 571 were issued before IA0023311.

Coverages issued nearest IA0023311

August 1, 2020: LENOX CITY OF STP, Lenox, IA0027995, held by CITY OF LENOX
August 1, 2020: SIBLEY CITY OF STP, Sibley, IA0032841, held by CITY OF SIBLEY
August 1, 2020: WAVERLY CITY OF STP, Waverly, IA0033197, held by CITY OF WAVERLY
August 1, 2020: CLARE CITY OF STP, Clare, IA0062936, held by CITY OF CLARE
August 1, 2020: BUSSEY CITY OF STP, Bussey, IA0072991, held by CITY OF BUSSEY
September 1, 2020: IOWA FALLS CITY OF STP, Iowa Falls, IA0023442, held by CITY OF IOWA FALLS
September 1, 2020: HOPKINTON CITY OF STP, Hopkinton, IA0023469, held by CITY OF HOPKINTON
September 1, 2020: OGDEN CITY OF STP, Ogden, IA0041904, held by CITY OF OGDEN
September 1, 2020: MONROE CITY OF STP (EAST), Monroe, IA0041947, held by CITY OF MONROE
September 1, 2020: HILLS, CITY OF WWTF, Hills, IA0052894, held by CITY OF HILLS

DIKE CITY OF STP among its neighbors

EPA’s permit file holds 2 discharge permits in the Headwaters North Fork Black Hawk Creek subwatershed (HUC 070802050402), IA0023311 among them. Its county holds 8, 1 of them major permits; IA0023311 is a minor permit.

Other permits in the Headwaters North Fork Black Hawk Creek subwatershed (HUC 070802050402)

STOUT CITY OF STP, Stout: IA0084107, minor permit, permit term to June 30, 2017

Identity

Facility as filed	DIKE CITY OF STP
Permittee as filed	CITY OF DIKE
NPDES ID	IA0023311
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 1, 2020
Expiration date	August 31, 2025
Issuing agency	STA
Address	Dike, IA 50624
Subwatershed	Headwaters North Fork Black Hawk Creek (HUC 070802050402)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems

Effluent limits and exceedances

9Pollutants on file
8Under a numeric limit
8With a violation of any kind
6With 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
Flow, in conduit or thru treatment plant	0	46	36	June 30, 2020	315% over the limit
Solids, total suspended	9	44	12	July 31, 2026	296% over the limit
pH	5	13	4	February 28, 2013
Nitrogen, ammonia total [as N]	48	10	2	January 31, 2021	47% over the limit
Nitrogen, total [as N]	2	4	1	May 31, 2022	11% over the limit
Oxygen, dissolved [DO]	1	4	1	February 28, 2023	7% over the limit
BOD, carbonaceous [5 day, 20 C]	4	18	0
E. coli	1	1	0
BOD, 5-day, 20 deg. C	5	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0023311.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0023311.

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 IA0023311.

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

This public-records page covers NPDES permit IA0023311 for DIKE CITY OF STP in Dike, IA, held by CITY OF DIKE, which EPA's file lists as administratively continued past its August 31, 2025 expiration date. The page lists 8 Minor Discharger class pollutants under a numeric limit, 6 pollutants with an effluent exceedance, and 9 pollutants on file.