Plaquemines Parish, LA
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Plaquemines Parish in Louisiana · Population: 23,070
TRI sites such as Chevron Oronite Co LLC - Oak Point Plant; Harvest Louisiana Terminals LLC - Alliance Terminal; C&c Marine & Repair L.L.C.; SDWIS systems such as BELLE CHASSE WATER DISTRICT; PORT SULPHUR WATER DISTRICT; DALCOUR WATERWORKS DISTRICT anchor Plaquemines Parish, LA's EPA extract. Derived burden score 46/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Plaquemines Parish include PORT SULPHUR WATER DISTRICT; DALCOUR WATERWORKS DISTRICT; POINTE A LA HACHE WATER SYSTEM, while Chevron Oronite Co LLC - Oak Point Plant leads reported TRI pounds among local Form R filers. No AQS county monitors report here.
Burden score 46/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Plaquemines Parish -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Plaquemines Parish, LA: EPA TRI 2023 reporting year
Same facilities, both years
-42.8%
10 facilities that filed in 2022 and 2023
Whole inventory
-42.8%
8.3 million lb → 4.7 million lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Plaquemines Parish, LA's total reported releases fell from 8.3 million lb in 2022 to 4.7 million lb in 2023, based on EPA TRI filings.
- Plaquemines Parish, LA's air releases fell from 408.8 thousand lb in 2022 to 160.1 thousand lb in 2023, based on EPA TRI filings.
- Plaquemines Parish, LA's water releases fell from 43.1 thousand lb in 2022 to 21.0 thousand lb in 2023, based on EPA TRI filings.
- Plaquemines Parish, LA's off-site transfers fell from 7.8 million lb in 2022 to 4.5 million lb in 2023, based on EPA TRI filings.
Water Systems (4)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| BELLE CHASSE WATER DISTRICT | 19,644 | 0 |
| PORT SULPHUR WATER DISTRICT | 10,308 | 123 |
| DALCOUR WATERWORKS DISTRICT | 1,248 | 24 |
| POINTE A LA HACHE WATER SYSTEM | 882 | 26 |
TRI Facilities (14)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Chevron Oronite Co LLC - Oak Point Plant | 36.3M lbs |
| 2 | Harvest Louisiana Terminals LLC - Alliance Terminal | 2.8M lbs |
| 3 | C&c Marine & Repair L.L.C. | 156.0K lbs |
| 4 | Cmp Coatings Inc. | 69.5K lbs |
| 5 | Sun Drilling Products Corp | 24.8K lbs |
| 6 | Daybrook Fisheries Inc | 8.2K lbs |
| 7 | Targa Midstream Services - Venice Gas Plant | 1.9K lbs |
| 8 | John W Stone Oil Distributor Venice Fuel Dock | 1.5K lbs |
| 9 | Redguard LLC | 214 lbs |
| 10 | US Navy Naval Air Station Joint Reserve Base New Orleans | 102 lbs |
| 11 | Jotun Paints Inc | 101 lbs |
| 12 | Iws Gas & Supply | 50 lbs |
| 13 | John W Stone Oil Distributors LLC | 2 lbs |
| 14 | Holcim - Plaquemines Lng Plant | 0 lbs |
Cities in Plaquemines Parish (4)
Frequently Asked Questions
What is the environmental risk level in Plaquemines Parish, Louisiana? ▼
Are there Superfund sites in Plaquemines Parish? ▼
How many toxic release facilities are in Plaquemines Parish? ▼
What is the air quality in Plaquemines Parish? ▼
Is the drinking water safe in Plaquemines Parish? ▼
What environmental agencies cover Plaquemines Parish? ▼
What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.