Clean Water Act discharge permit · NPDES IA0033600

KEOKUK ENERGY CENTER, Keokuk, IA: NPDES IA0033600 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
5Pollutants under a numeric limit
2Pollutants with an effluent exceedance

KEOKUK ENERGY CENTER, held by UNION ELECTRIC COMPANY dba AMEREN MISSOURI, holds NPDES permit IA0033600. EPA’s file records it issued July 1, 2016 and expiring June 30, 2021. 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	KEOKUK ENERGY CENTER
Permittee as filed	UNION ELECTRIC COMPANY dba AMEREN MISSOURI
NPDES ID	IA0033600
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	July 1, 2016
Expiration date	June 30, 2021
Issuing agency	STA
Address	Keokuk, IA 52632
Receiving water impaired	303(D) Listed
Subwatershed	Cedar Glen Creek-Mississippi River (HUC 070801041806)
Other EPA IDs (FRS)	RCRA handler IAD980630511

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

5Pollutants on file
5Under a numeric limit
4With a violation of any kind
2With 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
Oil & Grease	4	3	3	November 30, 2025	44% over the limit
Solids, total suspended	25	8	1	July 31, 2026	18% over the limit
BOD, carbonaceous [5 day, 20 C]	4	10	0
pH	6	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 IA0033600.

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.

Watch this permit

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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 IA0033600 there.

Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES IA0033600 for the KEOKUK ENERGY CENTER in Keokuk, IA, held by UNION ELECTRIC COMPANY dba AMEREN MISSOURI, with the permit status shown as administratively continued and the discharger class listed as Minor. The register lists 5 for the discharger class, 2 pollutants under a numeric limit, and 2 pollutants with an effluent exceedance, with the permit's issue and expiration dates as recorded in EPA's file as of September 15, 2026.