General requirements for per- and polyfluoroalkyl substances

General requirements for per- and polyfluoroalkyl substances. (1) General. A community water system and non-transient, non-community water system must meet the primary drinking water PFAS regulatory requirements of this section and ss. NR 809.221 to 809.226 , including the MCLs for the PFAS identified under s. NR 809.221 . (2) Implementation dates. A CWS or NTNCWS must meet all of the following deadlines to comply with the provisions of this subsection: (a) A system must report the results of initial monitoring, as described under s. NR 809.223 (2) , to the department by April 26, 2027. (b) A system must meet the compliance monitoring requirements under s. NR 809.223 (3) by April 26, 2027. (c) A system must meet the MCL compliance requirements under s. NR 809.224 by April 26, 2029. (d) A system must meet the reporting and recordkeeping requirements under s. NR 809.225 by April 26, 2027. (e) Violations described under s. NR 809.226 include monitoring and reporting violations and violations of MCLs. Monitoring and reporting violations may be assessed beginning on April 26, 2027. The department shall assess MCL violations based on initial and compliance PFAS monitoring results. (f) Beginning with the first quarter of operations, a new CWS, new NTNCWS, or new source of water that is newly regulated after April 26, 2027, must begin compliance monitoring as specified under s. NR 809.223 , meet MCL compliance requirements under s. NR 809.224 , and meet the reporting and recordkeeping requirements under s. NR 809.225 .