Westlake Chemical Corporation

PVC Resin for Pipe & Fittings →

PVC Resin for Pipe & Fittings →

Medical-Grade PVC Resin (DEHP Plasticized) →

PVC pressure pipe (C900, C905) for water distribution →

Industrial Salt / Brine (Chlor-Alkali Grade) →

Kentucky · chemical-plant

Integrated VCM and PVC resin production at Calvert City; Westlake also owns PVC pipe and fitting operations downstream.

Lake Charles, Calcasieu Parish, Louisiana, USA · chemical_plant

Westlake Chemical primary ethylene production complex at Lake Charles, Louisiana. Westlake is a major producer of chlorovinyls (PVC, chlorine, VCM) and polyethylene. Lake Charles was severely impacted by Hurricanes Laura (2020) and Delta (2020) within 6 weeks of each other; both storms disrupted Gulf Coast ethylene production.

1B lbs/yr PVC capacity; announced closure Dec 2025; removing North American capacity just as infrastructure demand surges

VCM and PVC production; major Gulf Coast resin facility; part of integrated chlorovinyl complex

Louisiana · manufacturing

Westlake Chemical's Lake Charles, Louisiana integrated PVC resin complex — the largest PVC resin production site in the US. Multiple PVC resin trains; co-located with chlor-alkali (chlorine/caustic soda) and VCM production. Capacity approximately 2.5-3 billion pounds/year of PVC resin. Hurricane-exposed: Lake Charles was severely damaged by Hurricanes Laura (August 2020, Category 4 direct hit) and Delta (October 2020), disrupting PVC resin production for months and contributing to construction material shortages during the 2020-2021 housing boom. Source: https://www.westlake.com/operations

Louisiana · manufacturing

Westlake Chemical's Sulphur, Louisiana PVC resin plant — a secondary facility within the Lake Charles area cluster (Calcasieu Parish). Part of the same Gulf Coast PVC production concentration that was severely disrupted by Hurricanes Laura and Delta in 2020. Co-located with Westlake's VCM and chlor-alkali operations in the Lake Charles industrial corridor. Source: https://www.westlake.com/operations

Sulphur, Calcasieu Parish, Louisiana · mine

ACTIVE CONCERN (2021-2024+): Westlake discovered pressure problems in its Sulphur Mines Salt Dome caverns (particularly Cavern 7) in 2021, causing oil seepage and seismic activity. Louisiana issued an emergency decree; LSU was commissioned to model how long brine/sulfide contamination would take to reach Chicot Aquifer public supply wells. Cavern instability ongoing through at least 2024. Westlake's Lake Charles South chlor-alkali complex is self-supplied from this dome.