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Westlake Polymers LLC

3525 Cities Service Hwy, Sulphur, LA 70665

LIKELY ACTIVELAST SEEN IN FEDERAL DATA JAN 2026 · 3 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

Petrochemical Manufacturing325110

Where it is

30.20075, -93.32626 · CENSUS TIGER
COUNTY
METRO AREA
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STREET VIEW

Other plants nearby

FacilityCityIndustryStatusDistance
Equistar Chemicals, L.p. - Lake Charles PlantSulphurPetrochemical Manufacturing
325110
 LIKELY ACTIVE1.1 KM
Linde INC - Sulphur PlantLake CharlesIndustrial Gas Manufacturing
325120
 LIKELY ACTIVE1.7 KM
Citgo Petroleum CORP - Lake Charles Manufacturing ComplexSulphurPetroleum Refineries
324110
 ACTIVE2.1 KM
Louisiana Pigment Company, L.p.WestlakeSynthetic Dye and Pigment Manufacturing
325130
 LIKELY ACTIVE1.9 KM
Lacc LLC US - Ethylene & Derivatives PlantWestlakePetrochemical Manufacturing
325110
 LIKELY ACTIVE2.3 KM

Every listed plant in Calcasieu County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 7 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in AIR, AIRS/AFS, CEDRI, E-GGRT, LA-TEMPO, NPDES, RBLC, RCRAINFO, TRIS · EPA site type STATIONARY.

  • EPA ECHO compliance recordsOPERATING
    first seen JAN 2026 · last seen JAN 2026
  • EPA Toxics Release InventoryOPERATING
    first seen DEC 2023 · last seen DEC 2024
  • EPA Facility Registry ServiceEXISTENCE
    Record 110000449587 · first seen JUN 2017 · last seen JUN 2017

IN CALCASIEU COUNTY42 other plants share this one’s industry (Basic Chemical Manufacturing, NAICS 3251); 11 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name
EPA: WESTLAKE POLYMERS LLC · OCT 2026
Street address
EPA: 3525 CITIES SERVICE HWY · OCT 2026
City
EPA: SULPHUR · OCT 2026
State
EPA: LA · OCT 2026
County (FIPS code)
EPA: 22019 · OCT 2026
Coordinates
EPA: 30.200747,-93.326256 · OCT 2026
Hazardous waste generator (RCRA)
EPA ECHO: LQG · OCT 2026

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