The Pollution Control Board adopted amendments to regulations governing primary drinking water standards. The amendments are “identical in substance” to regulations adopted by EPA in the second half of 2020 and first half of 2021, and include 17 additional alternate test procedures for analyzing contaminants in drinking water. See https://www.ilsos.gov/departments/index/register/volume47/register_volume47_46.pdf (pp. 16486-17195).