Iberville Parish, LA
The federal environmental record for Iberville Parish (population 29,617): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
4
federal cleanup sites
2
PFAS-detecting water systems
24
TRI facilities
3
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Bayou Sorrel | Bayou Sorrel | deleted | 09/21/1984 |
Drinking water: PFAS testing
Public water systems serving Iberville 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 |
|---|---|---|
| CITY OF PLAQUEMINE WATER SYSTEM LA1047005 | PFBA: 14.2 ng/L PFOA: 6.2 ng/L PFOS: 6 ng/L | above final limit |
| INTRACOASTAL WATER SYSTEM WEST LA1047002 | PFBA: 5.7 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
24 facilities in Iberville filed TRI reports for 2024, totalling 11.2M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| FLOPAM INC | PLAQUEMINE | Ammonia, Acrylic acid | 4.1M lb |
| SYNGENTA CROP PROTECTION LLC SAINT GABRIEL FACILITY | SAINT GABRIEL | N-Methyl-2-pyrrolidone, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 2.4M lb |
| THE DOW CHEMICAL CO - LOUISIANA OPERATIONS | PLAQUEMINE | Ammonia, Ethylene | 2.0M lb |
| TAMINCO US LLC | SAINT GABRIEL | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Triethylamine | 730k lb |
| WESTLAKE CHEMICALS & VINYLS LLC | PLAQUEMINE | Chlorodifluoromethane (HCFC-22), Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 567k lb |
| TSRC SPECIALTY MATERIALS LLC | PLAQUEMINE | Cyclohexane, Styrene | 375k lb |
| SHINTECH PLAQUEMINE PLANT | PLAQUEMINE | Ammonia, Chlorine | 372k lb |
| BLUE CUBE OPERATIONS LLC - PLAQUEMINE SITE | PLAQUEMINE | Asbestos (friable), Copper | 349k lb |
| COS-MAR CO | CARVILLE | Styrene, Molybdenum trioxide | 220k lb |
| BOARDWALK LOUISIANA MIDSTREAM LLC | PLAQUEMINE | Ethylene, Propylene | 45k lb |
| TOTALENERGIES PETROCHEMICALS & REFINING USA INC CARVILLE POL | CARVILLE | Styrene, Ethylbenzene | 25k lb |
| INEOS OXIDE A DIV OF INEOS AMERICAS LLC | PLAQUEMINE | Ethylene, Methanol | 14k lb |
| PLAQUEMINE METHOCEL | PLAQUEMINE | Methanol, Chloromethane | 13k lb |
| SE TYLOSE LOUISIANA LLC | PLAQUEMINE | tert-Butyl alcohol, Nitric acid | 6k lb |
| BCP INGREDIENTS INC | SAINT GABRIEL | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ethylene oxide | 4k lb |
| ENLINK LIG LIQUIDS LLC - PLAQUEMINE GAS PLANT | PLAQUEMINE | n-Hexane, Benzene | 4k lb |
| MEXICHEM FLUOR INC | SAINT GABRIEL | 2-Chloro-1,1,1-trifluoroethane (HCFC-133a), Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 3k lb |
| ENLINK PROCESSING SERVICES LLC - PLAQUEMINE NGL FRACTIONATIO | PLAQUEMINE | n-Hexane, Benzene | 3k lb |
| NACHURS ALPINE SOLUTIONS | SAINT GABRIEL | Ammonia, Formic acid | 2k lb |
| THORPE PLANT SERVICES INC | SAINT GABRIEL | Styrene | 2k lb |
| BRENNTAG SOUTHWEST INC ST GABRIEL | SAINT GABRIEL | Cyclohexane, Toluene | 2k lb |
| DELTA COS GROUP ST GABRIEL | SAINT GABRIEL | N-Hydroxyethylethylenediamine | 106 lb |
| PIONEER AMERICAS LLC (DBA OLIN CHLOR ALKALI PRODUCTS) | SAINT GABRIEL | Chlorine | 69 lb |
| HARCROS CHEMICALS INC | SAINT GABRIEL | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 163 tank facilities in Iberville: 74 tanks in service and 381 closed. 42 fuel releases are on record, of which 3 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Iberville 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 Iberville, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BAYOU SORRELBAYOU SORREL
- COASTAL RADIATION SERVICESST. GABRIEL
- OLIN CHLORINE RELEASEPLAQUEMINE
- THE DOW CHEMICAL CO - LOUISIANA OPERATIONSPLAQUEMINE