US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 604 — DESIGN, OPERATION AND MAINTENANCE CRITERIASubpart A604.10035 Ill. Adm. Code 604.100PurposeYear: 2026Length: 22 wordsOfficial source Section 604.100 Purpose This Part includes the design, operational, and maintenance criteria for owners, operators and official custodians of community water supplies.Next35 Ill. Adm. Code 604.110