Assumption Parish, LA
The federal environmental record for Assumption Parish (population 20,160): 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
1
PFAS-detecting water systems
3
TRI facilities
1
open tank releases
Drinking water: PFAS testing
Public water systems serving Assumption 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 |
|---|---|---|
| ASSUMPTION PARISH WW DISTRICT 1 LA1007001 | 6:2 FTS: 15 ng/L PFBA: 6.1 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
3 facilities in Assumption filed TRI reports for 2024, totalling 6k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ENTERPRISE PRODUCTS OPERATING | BELLE ROSE | n-Hexane, Benzene | 6k lb |
| THE DOW CHEMICAL CO GRAND BAYOU OPERATIONS | PAINCOURTVILLE | Chlorine | 280 lb |
| NOV TUBOSCOPE AMELIA NORTH & SOUTH COATING & INSPECTION | MORGAN CITY | Lead | 5 lb |
Underground fuel tanks
EPA's UST Finder records 95 tank facilities in Assumption: 50 tanks in service and 232 closed. 23 fuel releases are on record, of which 1 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Assumption 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