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ChemScore report card 2025
Westlake
Total Score
5/100
Ranking
37/40
About the company
Westlake is an international manufacturer and supplier of petrochemicals, polymers and fabricated building products. The company serves a variety of different sectors such as the agricultural, food, construction, automotive and electronics industries. The Houston-based company operates in two segments — olefins and vinyls.
Transparency
0 out of 25 points
Action points
- Start disclosing revenue connected to hazardous chemicals
- Start publishing volumes of hazardous substances that leave the company’s facilities as products or services
- Report on global hazardous substances portfolio (beyond EU/US) on a substance-by-substance basis
Phase-out of persistent chemicals
0 out of 25 points
Action points
- Start mapping the presence of intentionally or unintentionally present persistent chemicals in the company’s processes and upstream value chain
- Start reporting and/or limit the share of revenue from persistent chemicals considerably
- Stop producing persistent chemicals and set up a timed phase-out plan
Product portfolio
5 out of 25 points
Number of registered hazardous chemicals
20
Number of chemicals on the EU’s Candidate List
7
Number of chemicals on the EU’s Authorisation List and/or POP substances
2
Number of persistent chemicals
1
Product portfolio transparency
79%
Action points
- Reduce the number of hazardous substances the company is using, producing and placing on the market
Safer solutions
0 out of 25 points
Action points
- Either start reporting the company’s share of safer solutions or increase it substantially. At a minimum, REACH candidate list substances must be excluded from such products
- Publicly commit not to develop or market new products containing hazardous substances. At a minimum, REACH candidate list substances must be excluded from such products
- Publicly commit to increasing the share of sales of safer solutions
Category breakdown
How did we come to this score?
Company facts
Founded
1986
Headquarters
Houston, USA
Revenue
12.1 billion USD
ISIN
US9604131022
Category
Basic
Plastic / Rubber / Fibres
