EPA-regulated facilities in St. Mary Parish, LA

There are 1,158 EPA-regulated facilities inside St. Mary Parish, Louisiana. The most common kinds are hazardous waste (513), water discharge (453), air emissions (317). 23 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 36 have a violation on record. Penalties over the last five years total $298k across 17 sites.

Open the map of St. Mary Parish

1,158facilities in the county

23in significant noncompliance

36with a violation on record

$298kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	513
Treatment, storage or disposal	1
Large quantity generators	24
Small quantity generators	291
Transporters	55
Chemical (RMP/TRI)	37
Air emissions	317
Major sources	30
Synthetic minor sources	8
Minor sources	206
Water discharge	453
Major permits	4
Minor permits	404
Drinking water systems	17
Greenhouse gas reporters	19
Scrap yards	1

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.

COASTAL TANK CLEANING LLC 1115 FRONT STREET, MORGAN CITY, LA, 70380 Significant noncompliance · $15k in penalties
ENERGY XXI ONSHORE, LLC- BANFF (KEARNEY, NO. 1 WELL) BAYOU CARLIN FIELD, GORDY, LA, 70000 Significant noncompliance
COLUMBIAN CHEMICALS COMPANY (NORTH BEND CARBON BLACK PLANT) 370 COLUMBIAN CHEMICALS LANE, CENTERVILLE, LA, 70522 Significant noncompliance
CLECO POWER LLC - ST MARY CLEAN ENERGY CENTER 155 POWER ISLAND LN, CENTERVILLE, LA, 70522 Significant noncompliance
LITTLE ADEN INC.-BAYOU CORNER STOP 103 HWY 182, ASSUMPTION PARISH, LA, 70380 Significant noncompliance
ENERGY XXI ONSHORE LLC WELL #1 - BAYOU CARLIN FIELD, FRANKLIN, LA, 70000 Significant noncompliance
CITY OF FRANKLIN WATER SUPPLY-SURFACE WATER TREATMENT PLANT CITY OF FRANKLIN WATER SYSTEM, FRANKLIN, LA, 70538 Significant noncompliance
FRANKLIN WASTEWATER TREATMENT PLANT 811 NORTHWEST BOULEVARD, FRANKLIN, LA, 70538 Significant noncompliance
GULF CRAFT 320 BORO LN, FRANKLIN, LA, 70538 Significant noncompliance
BERWICK BAYOU VISTA WW COMMISSION-SURFACE WATER TREATMENT PLANT BERWICK BAYOU VISTA WW COMMISSION, BERWICK, LA, 70342 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

PATTERSON TERMINAL 309 TORCH LANE, PATTERSON, LA, 70392 $68k in penalties
NATIONAL MARINE ENVIRONMENTAL LLC 958 LAKE PALOURDE RD, MORGAN CITY, LA, 70380 $60k in penalties
CROWN OILFIELD SERVICES INC - PATTERSON FACILITY 497 HWY 182, BAYOU VISTA, LA, 70380 $37k in penalties
ST MARY PARISH WARDS 5&8 JOINT SEWER COMMISSION - REGIONAL SEWERAGE TREATMENT FA 735 COTTON RD, PATTERSON, LA, 70392 $20k in penalties
AMERICAN VACUUM 1232 SIRACUSA ROAD, MORGAN CITY, LA, 70381 $15k in penalties

Towns in St. Mary Parish

Morgan City

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.