Terrebonne Parish, LA
The federal environmental record for Terrebonne Parish (population 103,616): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
2
federal cleanup sites
2
PFAS-detecting water systems
8
TRI facilities
6
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Delta Shipyard | Houma | on the NPL | 09/22/2014 |
Drinking water: PFAS testing
Public water systems serving Terrebonne 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 |
|---|---|---|
| HOUMA WATER TREATMENT SERVICE AREA LA1109001 | PFBA: 8 ng/L PFPeA: 3.7 ng/L | detected |
| SCHRIEVER WATER TREATMENT SERVICE AREA LA1109002 | PFBA: 6.8 ng/L PFHxA: 3.2 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
8 facilities in Terrebonne filed TRI reports for 2024, totalling 42k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| LASHIP LLC | HOUMA | Xylene (mixed isomers), n-Butyl alcohol | 39k lb |
| NATIONAL OILWELL VARCO LP | HOUMA | Nickel, Chromium | 1k lb |
| VALLOUREC TUBE-ALLOY LLC | HOUMA | Chromium, Lead | 752 lb |
| OIL STATES INDUSTRIES - HOUMA | HOUMA | Propylene | 548 lb |
| BOLLINGER HOUMA SHIPYARDS LLC | HOUMA | Nickel, Lead | 231 lb |
| GULF ISLAND FABRICATION LLC | HOUMA | Manganese | 125 lb |
| PERFORMANCE ENERGY SERVICES LLC | HOUMA | Manganese, Nickel | 55 lb |
| HUNTING ENERGY SERVICES LLC | SCHRIEVER | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 406 tank facilities in Terrebonne: 289 tanks in service and 821 closed. 140 fuel releases are on record, of which 6 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Terrebonne 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 - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Terrebonne, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- DELTA SHIPYARDHOUMA
- TRANSCONTINENTAL GAS PIPE LINE CORP - TRANSCO COMPRESSOR STATION 62GIBSON