Jefferson 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 Jefferson Parish in Louisiana · Population: 432,484
TRI sites such as Cornerstone Chemical Co LLC; Roehm America LLC; Cf Industries East Point LLC; SDWIS systems such as E JEFFERSON WW DISTRICT 1; W JEFFERSON WW DISTRICT 2; WESTWEGO WATERWORKS anchor Jefferson Parish, LA's EPA extract. Derived burden score 48/100 (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 Jefferson Parish include W JEFFERSON WW DISTRICT 2; WESTWEGO WATERWORKS, while Cornerstone Chemical Co LLC leads reported TRI pounds among local Form R filers. AQS median AQI 46 / peak 188 in 2024.
Burden score 48/100 (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 Jefferson 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 Jefferson Parish, LA: EPA TRI 2023 reporting year
Same facilities, both years
-5.7%
13 facilities that filed in 2022 and 2023
Whole inventory
-5.7%
15.0 million lb → 14.1 million lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Jefferson Parish, LA's total reported releases fell from 15.0 million lb in 2022 to 14.1 million lb in 2023, based on EPA TRI filings.
- Jefferson Parish, LA's water releases rose from 136.3 thousand lb in 2022 to 381.3 thousand lb in 2023, based on EPA TRI filings.
- Jefferson Parish, LA's off-site transfers fell from 1.4 million lb in 2022 to 952.6 thousand lb in 2023, based on EPA TRI filings.
- Jefferson Parish, LA's air releases fell from 745.8 thousand lb in 2022 to 679.1 thousand lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 224 (61%) | 141 | 0 | 188 |
| 2023 | 181 (50%) | 179 | 4 | 126 |
| 2022 | 219 (60%) | 143 | 0 | 96 |
| 2021 | 277 (78%) | 76 | 2 | 105 |
| 2020 | 280 (77%) | 86 | 0 | 87 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Louisiana, see the EPA's AirNow.gov.
Water Systems (3)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| E JEFFERSON WW DISTRICT 1 | 275,163 | 0 |
| W JEFFERSON WW DISTRICT 2 | 140,264 | 5 |
| WESTWEGO WATERWORKS | 8,534 | 6 |
TRI Facilities (18)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Cornerstone Chemical Co LLC | 65.6M lbs |
| 2 | Roehm America LLC | 10.5M lbs |
| 3 | Cf Industries East Point LLC | 1.1M lbs |
| 4 | Kemira Chemicals Inc | 792.9K lbs |
| 5 | Ninemile Point Plant | 371.2K lbs |
| 6 | Bollinger Quick Repair LLC | 66.1K lbs |
| 7 | Shell Kenner Terminal | 18.9K lbs |
| 8 | Vertex Refining la LLC | 12.6K lbs |
| 9 | New Orleans Shipyard | 2.3K lbs |
| 10 | Fmt Shipyard & Repair LLC | 2.3K lbs |
| 11 | John W Stone Oil Distributor | 1.2K lbs |
| 12 | Five Star Products Inc. | 982 lbs |
| 13 | Gold Bond Building Products - Westwego | 58 lbs |
| 14 | Safety-Kleen Systems Kenner (ken) | 1 lbs |
| 15 | Quikrete - New Orleans la Plant | 1 lbs |
| 16 | Holcim - Sor Inc. - Airline Rmx | 0 lbs |
| 17 | Safety-Kleen Systems - Metairie | 0 lbs |
| 18 | Wechem Inc | 0 lbs |
Cities in Jefferson Parish (9)
Frequently Asked Questions
What is the environmental risk level in Jefferson Parish, Louisiana? ▼
Are there Superfund sites in Jefferson Parish? ▼
How many toxic release facilities are in Jefferson Parish? ▼
What is the air quality in Jefferson Parish? ▼
Is the drinking water safe in Jefferson Parish? ▼
What environmental agencies cover Jefferson 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.