US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 310 — PRETREATMENT PROGRAMSSubpart D310.44135 Ill. Adm. Code 310.441Effect of a PermitYear: 2026Length: 25 wordsOfficial source Section 310 Section 310.441 Effect of a Permit Existence of a pretreatment permit is a defense only to a charge of operation without a permit.Previous35 Ill. Adm. Code 310.432Next35 Ill. Adm. Code 310.442