US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 501 — GENERAL PROVISIONSSubpart B501.24135 Ill. Adm. Code 501.241CWALast amended: 2014Year: 2026Length: 16 wordsOfficial source Section 501 Section 501.241 CWA The Clean Water Act, as amended (33 USC 1251 et seq.).Previous35 Ill. Adm. Code 501.240Next35 Ill. Adm. Code 501.242