Plant Finder
Twelve process families mapped to US manufacturing facilities. Process verified means the plant files a federal air rule or reports chemicals to EPA TRI that fit the process; Industry match means the match is by industry code only. Start from a process, pick a state, see the facilities.
About the data
Three EPA public datasets, joined on facility registry id: ECHO/ICIS-Air for federal air rule compliance, the National Emissions Inventory for reported source-category emissions, and the Toxics Release Inventory for chemical releases. All three are US government public domain.
A plant is process verified when at least one of those three sources ties it to the process (for example, a coating plant registered under a federal coating NESHAP, or a plating plant reporting chromium to TRI). Everything else matched to the family through its NAICS code is industry match.