AUTHORITY: Implementing section 1401(1)(D) of the Safe Drinking Water Act (42 USC 300f(1)(D)), subpart C of the National Primary Drinking Water Regulations (40 CFR 141.21 through 141.30 (2014)), the Illinois Environmental Protection Act [415 ILCS 5] and the Civil Administrative Code of Illinois [20 ILCS 5], and authorized by Section 4(o) and (p) of the Illinois Environmental Protection Act and Sections 2310-575, 2310-580, and 2310-30 of the Civil Administrative Code of Illinois [20 ILCS 2310].
SOURCE: Adopted at 22 Ill. Reg. 14294, effective July 15, 1998; amended at 35 Ill. Reg. 14494, effective August 12, 2011; amended at 38 Ill. Reg. 16240, effective July 15, 2014; amended at 39 Ill. Reg. 14586, effective October 23, 2015; amended at 46 Ill. Reg. 19150, effective November 17, 2022.