{"data":{"id":"us-il/415-ilcs-45-5.1","jurisdiction":"us-il","citation":"415 ILCS 45/5.1","heading":"Class definitions.","body":"Except as otherwise provided by Agency rules adopted pursuant to subsection (2.5) of Section 1 of this Act:\n\"Class A community water supply\" means (i) any surface water community water supply and (ii) any community water supply that includes coagulation, lime softening, ultraviolet disinfection, membrane filtration, or sedimentation as a part of its primary treatment.\n\"Class B community water supply\" means any community water supply that includes filtration (other than membrane filtration), aeration and filtration (other than membrane filtration), or ion exchange equipment as a part of its primary treatment.\n\"Class C community water supply\" means any community water supply that uses chemical feeding as its only form of treatment.\n\"Class D community water supply\" means any community water supply that has only pumpage, storage, or distribution facilities.","path":["CHAPTER 415 ENVIRONMENTAL SAFETY","Public Water Supply Operations Act."],"source_url":"https://www.ilga.gov/legislation/ILCS/details?ActID=1593\u0026ChapterID=36\u0026ChapAct=FullText\u0026Print=True","current_through":"at least Public Act 104-790","vintage":"","retrieved_at":"2026-09-15T04:46:36Z","sha256":"4999b84921fbfa5886fa7c63777bce1e46dbfff35d79b9629ef03cda0c950def","source_id":"us-il","stale":false,"prev":"us-il/415-ilcs-45-5","next":"us-il/415-ilcs-45-6"},"notice":"GroundRules: Original legal text. Not legal advice."}