US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 306 — PERFORMANCE CRITERIASubpart C306.30335 Ill. Adm. Code 306.303Excess InfiltrationLast amended: 2023Year: 2026Length: 24 wordsOfficial source Section 306 Section 306.303 Excess Infiltration Excess infiltration into sewers must be eliminated, and the maximum practicable flow must be conveyed to treatment facilities.Previous35 Ill. Adm. Code 306.302Next35 Ill. Adm. Code 306.304