Clean Water Act discharge permit · NPDES IA0000191

EQUISTAR CHEMICALS, LP, Clinton, IA: NPDES IA0000191 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MajorDischarger class
66Pollutants under a numeric limit
8Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

EQUISTAR CHEMICALS, LP holds NPDES permit IA0000191. EPA’s file records it issued July 1, 2024 and expiring June 30, 2029. 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	EQUISTAR CHEMICALS, LP
Permittee as filed	EQUISTAR CHEMICALS, LP
NPDES ID	IA0000191
Permit status	Effective
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Not a publicly owned treatment works
Issued	July 1, 2024
Expiration date	June 30, 2029
Issuing agency	STA
Address	Clinton, IA 52732
Receiving water impaired	303(D) Listed
Subwatershed	Cordova Slough-Mississippi River (HUC 070801010402)
Other EPA IDs (FRS)	RCRA handler IAD045372836; ICIS-AIR source IA0000001904500020

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

Effluent limits and exceedances

78Pollutants on file
66Under a numeric limit
74With a violation of any kind
8With 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; the 60 with the most exceedances of 78 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
BOD, 5-day, 20 deg. C	9	20	16	April 30, 2021	359% over the limit
Solids, total suspended	9	19	11	June 30, 2012	476% over the limit
Phenol	4	9	5	March 31, 2013	508% over the limit
Acenaphthene	4	8	3	September 30, 2016	33% over the limit
Naphthalene	4	7	3	December 31, 2004	182% over the limit
Flow, in conduit or thru treatment plant	0	4	2	August 31, 2011	7% over the limit
Acenaphthylene	4	5	1	August 31, 2001	76% over the limit
Zinc, total [as Zn]	0	5	1	February 28, 2006	5% over the limit
E. coli	1	19	0
Phenols	0	10	0
Tetrachloroethylene	0	8	0
Chrysene	4	6	0
Polynuclear Aromatic Hydrocarbons [PAHs]	4	4	0
Carbon tetrachloride	4	4	0
1,2-Dichloroethane	4	4	0
Chloroform	4	4	0
Toluene	4	4	0
Benzene	4	4	0
Acrylonitrile	4	4	0
Anthracene	4	4	0
Benzo[b]fluoranthene	4	4	0
Benzo[k]fluoranthene	4	4	0
Benzo[a]pyrene	4	4	0
Chlorobenzene	4	4	0
Diethyl phthalate	4	4	0
Dimethyl phthalate	4	4	0
Ethylbenzene	4	4	0
Fluoranthene	4	4	0
Fluorene	4	4	0
Hexachloroethane	4	4	0
Methyl chloride [Chloromethane]	4	4	0
Methylene chloride	4	4	0
Nitrobenzene	4	4	0
Phenanthrene	4	4	0
Pyrene	4	4	0
1,1-Dichloroethane	4	4	0
1,1-Dichloroethylene	4	4	0
1,1,1-Trichloroethane	4	4	0
1,1,2-Trichloroethane	4	4	0
Benzo[a]anthracene	4	4	0
1,2-Dichlorobenzene	4	4	0
1,2-Dichloropropane	4	4	0
trans-1,2-Dichloroethylene	4	4	0
1,2,4-Trichlorobenzene	4	4	0
1,3-Dichlorobenzene	4	4	0
1,4-Dichlorobenzene	4	4	0
2-Chlorophenol	4	4	0
2-Nitrophenol	4	4	0
2,4-Dichlorophenol	4	4	0
2,4-Dimethylphenol	4	4	0
2,4-Dinitrotoluene	4	4	0
2,4-Dinitrophenol	4	4	0
2,6-Dinitrotoluene	4	4	0
4-Nitrophenol	4	4	0
4,6-Dinitro-o-cresol	4	4	0
Di[2-ethylhexyl] phthalate [DEHP]	4	4	0
Di-n-butyl phthalate	4	4	0
Vinyl chloride	4	4	0
Hexachlorobenzene	4	4	0
Hexachlorobutadiene	4	4	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 IA0000191.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0000191.

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 IA0000191.

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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How we handle your data → Privacy

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 IA0000191 there.

Nearby on the register

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

This public-records page covers NPDES permit IA0000191, held by EQUISTAR CHEMICALS, LP in Clinton, IA, a Major Discharger with Effective permit status issued July 1, 2024 and expiring June 30, 2029. The page lists 78 pollutants on file, of which 66 are under a numeric limit and 8 have an effluent exceedance, with 74 showing a violation of any kind. The status and dates reflect EPA's permit file as loaded on September 15, 2026.