[3] Regulated pollutants vary by industry category, with effluent limitations typically expressed as mass loadings or concentrations.
[3] In addition to numerical effluent limitations, some categories also include requirements for the use of industry-specific best management practices.
[8] EPA is also required to review and revise regulations as needed, and since 1972 it has promulgated ELGs for 59 industrial categories, with over 450 subcategories.
[2] The EPA database supports searching of existing regulations by industry, pollutant, treatment technology or keyword.
[14] EPA will conduct research on the Textile Mills category (40 CFR part 410) to learn more about its PFAS usage and discharge characteristics.
EPA intends to confirm the origins of PFAS wastewater and assist POTWs in determining whether source-level controls are necessary.
Additionally, EPA will keep an eye on PFAS use and emissions from airports and the Pulp, Paper, and Paperboard Category (40 CFR part 430).