EPA-regulated facilities in St. Landry Parish, LA
There are 917 EPA-regulated facilities inside St. Landry Parish, Louisiana. The most common kinds are water discharge (492), hazardous waste (323), air emissions (128). 43 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 68 have a violation on record. Penalties over the last five years total $274k across 17 sites.
Open the map of St. Landry Parish
By category
| Category | Facilities |
|---|---|
| Hazardous waste | 323 |
| Large quantity generators | 6 |
| Small quantity generators | 241 |
| Transporters | 5 |
| Chemical (RMP/TRI) | 9 |
| Superfund | 1 |
| Air emissions | 128 |
| Major sources | 6 |
| Synthetic minor sources | 3 |
| Minor sources | 75 |
| Water discharge | 492 |
| Major permits | 4 |
| Minor permits | 474 |
| Drinking water systems | 31 |
| Greenhouse gas reporters | 7 |
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.
- OPELOUSAS CITY OF - CANDY STREET WWTF Significant noncompliance · $5k in penalties
- ST. LANDRY PARISH SOLID WASTE COMMISSION- ST. LANDRY PARISH SANITARY LANDFILL Significant noncompliance · $4k in penalties
- KEY OPERATING & PRODUCTION CO., LLC Significant noncompliance · $1k in penalties
- WALMART DISTRIBUTION CENTER WATER SYSTEM Significant noncompliance
- PORT BARRE, TOWN OF Significant noncompliance
- LIVE OAK MHP Significant noncompliance
- WASHINGTON TOWN OF - STP Significant noncompliance
- CAJUN CATFISH HOLE OF OPELOUSAS INC.- RAINBOW APTS Significant noncompliance
- QUEENDOM PROPERTIES LLC - TWIN OAKS Significant noncompliance
- ST. LANDRY COUNCIL ON AGING Significant noncompliance
Largest penalties
Penalties assessed over the last five years.
- LOWE'S HOME CENTERS LLC - STORE #1822 $142k in penalties
- OPELOUSAS GENERAL HOSPITAL $40k in penalties
- VENTURA FOODS LLC $32k in penalties
- PORT BARRE QLF PLANT - QUALITY LIQUID FEEDS INC $16k in penalties
- QUALITY LIQUID FEEDS $15k in penalties
Superfund sites
Towns in St. Landry Parish
Bordering counties
- Acadia Parish
- Avoyelles Parish
- Evangeline Parish
- Lafayette Parish
- Pointe Coupee Parish
- St. Martin Parish
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.