EPA
EPA sued for failing to regulate perchlorate (Cl04-)
https://www.newsweek.com/epa-sued-not-regulating-rocket-fuel-chemical-drinking-water-1529601
PFAS
forever chemicals – Per and Polyfluoroalkyl Substances PFAS
https://www.reuters.com/article/us-usa-water-foreverchemicals/u-s-drinking-water-widely-contaminated-with-forever-chemicals-report-idUSKBN1ZL0F8