Ouachita Parish, LA
The federal environmental record for Ouachita Parish (population 157,568): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
0
federal cleanup sites
2
PFAS-detecting water systems
7
TRI facilities
29
open tank releases
Drinking water: PFAS testing
Public water systems serving Ouachita with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| MONROE WATER SYSTEM, LA LA1073031 | PFBA: 8.2 ng/L | detected |
| TOWN & COUNTRY SERVICE LA1073054 | PFBA: 5.7 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
7 facilities in Ouachita filed TRI reports for 2024, totalling 8.3M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ADVANCION CORP | STERLINGTON | Nitric acid, Formaldehyde | 5.7M lb |
| GRAPHIC PACKAGING INTERNATIONAL LLC | WEST MONROE | Methanol, Ammonia | 2.5M lb |
| ECOLOGICAL TANKS INC | DOWNSVILLE | Styrene | 37k lb |
| LEXICON INC DBA STEEL FABRICATORS OF MONROE | MONROE | Manganese | 35 lb |
| PLYMOUTH TUBE CO | WEST MONROE | - | 0 lb |
| RIVER CITY READY MIX LLC - MONROE | MONROE | Lead compounds | 0 lb |
| RIVER CITY READY MIX LLC - WEST MONROE | WEST MONROE | Lead compounds | 0 lb |
Underground fuel tanks
EPA's UST Finder records 621 tank facilities in Ouachita: 325 tanks in service and 1,364 closed. 235 fuel releases are on record, of which 29 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Ouachita as Zone 3, the lowest predicted indoor radon (under 2 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39