US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 502 — PERMITSSubpart C502.30235 Ill. Adm. Code 502.302Duration of PermitsYear: 2026Length: 20 wordsOfficial source Section 502 Section 502.302 Duration of Permits NPDES permits will be issued for fixed terms not to exceed five years.Previous35 Ill. Adm. Code 502.301Next35 Ill. Adm. Code 502.303