RÉSUMÉ DIGEST ACT 308 (HB 342) 2021 Regular Session Wright New law authorizes the governing authority of St. Tammany Parish to require testing for secondary contaminants in drinking water systems. New law defines "secondary contaminant" as any substance for which secondary maximum contaminant levels are established in the National Secondary Drinking Water Regulations of the EPA. Effective upon signature of governor (June 14, 2021). (Adds RS 33:1236.30)