US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 604 — DESIGN, OPERATION AND MAINTENANCE CRITERIASubpart C604.30035 Ill. Adm. Code 604.300PurposeYear: 2026Length: 19 wordsOfficial source Section 604.300 Purpose The purpose of the following requirements is to facilitate protection of source water quality and quantity.Next35 Ill. Adm. Code 604.305