US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 301 — INTRODUCTION301.29535 Ill. Adm. Code 301.295Interstate WatersLast amended: 2023Year: 2026Length: 26 wordsOfficial source Section 301 Section 301.295 Interstate Waters "Interstate Waters" are waters that cross or form part of the border between Illinois and one or more other states.Previous35 Ill. Adm. Code 301.290Next35 Ill. Adm. Code 301.300