US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 611 — PRIMARY DRINKING WATER STANDARDSSubpart B611.24135 Ill. Adm. Code 611.241Unfiltered PWSs (Repealed)Last amended: 2023Year: 2026Length: 7 wordsOfficial source Section 611 Section 611.241 Unfiltered PWSs (Repealed)Previous35 Ill. Adm. Code 611.240Next35 Ill. Adm. Code 611.242