EPA-regulated facilities in Iberville Parish, LA

There are 714 EPA-regulated facilities inside Iberville Parish, Louisiana. The most common kinds are water discharge (342), hazardous waste (241), air emissions (210). 25 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 40 have a violation on record. Penalties over the last five years total $2.6M across 29 sites.

Open the map of Iberville Parish

714facilities in the county

25in significant noncompliance

40with a violation on record

$2.6Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	241
Treatment, storage or disposal	7
Large quantity generators	33
Small quantity generators	133
Transporters	9
Chemical (RMP/TRI)	47
Superfund	5
Air emissions	210
Major sources	22
Synthetic minor sources	4
Minor sources	110
Water discharge	342
Major permits	16
Minor permits	313
Drinking water systems	20
Greenhouse gas reporters	14

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

THE DOW CHEMICAL CO - LOUISIANA OPERATIONS 21255 LA-1, PLAQUEMINE, LA, 70765 Significant noncompliance · $1.1M in penalties
SHINTECH PLAQUEMINE PLANT 26270 HIGHWAY 405, PLAQUEMINE, LA, 70764 Significant noncompliance · $489k in penalties
LBC BATON ROUGE, LLC 1725 HWY #75, SUNSHINE, LA, 70780 Significant noncompliance · $166k in penalties
DELTA ST. GABRIEL 3950 LOUISIANA 30, ST. GABRIEL, LA, 70776 Significant noncompliance · $30k in penalties
TSRC SPECIALTY MATERIALS LLC - RESEARCH & DEVELOPMENT PILOT PLANT 21255 HWY 1 BLDG 2501, PLAQUEMINE, LA, 70764 Significant noncompliance · $24k in penalties
SCHWING 10 PRODUCTION BARGE FROG LAKE OIL FIELD, IBERVILLE PARISH, LA, 70000 Significant noncompliance · $7k in penalties
PLAQUEMINE POINT SHIPYARD 1070 RIVER RD, SUNSHINE, LA, 70780 Significant noncompliance · $1k in penalties
IBERVILLE PARISH COUNCIL OFFICE 65200 BELLEVIEW RD HWY 75, PLAQUEMINE, LA, 70764 Significant noncompliance
IBERVILLE PARISH COUNCIL PATUREAU LANE SEWER 61755 BAYOU ROAD, MONROE, LA, 70764 Significant noncompliance
INTRACOASTAL WATER SYSTEM WEST-HAASE WELL TREATMENT PLANT IBERVILLE PARISH UTILITY DEPARTMENT, PLAQUEMINE, LA, 70765 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

SYNGENTA CROP PROTECTION, LLC. - ST GABRIEL PLANT 3905 HIGHWAY 75, SAINT GABRIEL, LA, 70776 $405k in penalties
TAMINCO EASTMAN US - ST GABRIEL PLANT 3790 E HWY 30, SAINT GABRIEL, LA, 70776 $64k in penalties
TOTALENERGIES PETROCHEMICALS & REFINING USA, INC. - CARVILLE POLYSTYRENE PLANT 6225 HIGHWAY 75, CARVILLE, LA, 70721 $48k in penalties
BRENNTAG SOUTHWEST, INC. ST. GABRIEL BLEACH PLANT 4205 HWY 75, ST. GABRIEL, LA, 70776 $45k in penalties
INEOS OXIDE - A DIVISION OF INEOS AMERICAS LLC 21255A HWY 1 S, PLAQUEMINE, LA, 70764 $22k in penalties

Superfund sites

BAYOU SORREL CNFLNCE PAT BAYOU & UPR GRAND, BAYOU SORREL, LA, 70764
OLIN CHLORINE RELEASE 21255 LA-1 N, PLAQUEMINE, LA, 70764
THE DOW CHEMICAL CO - LOUISIANA OPERATIONS 21255 LA-1, PLAQUEMINE, LA, 70765 Significant noncompliance · $1.1M in penalties
WESTLAKE FIRE - PLAQUEMINE, LA 26100 LA-405, PLAQUEMINE, LA, 70764
COASTAL RADIATION SERVICES 6745 BAYOU PAUL ROAD, ST. GABRIEL, LA, 70776-5609

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.