US lawIllinoisRegulationsTitle 77 — PUBLIC HEALTHCHAPTER I: DEPARTMENT OF PUBLIC HEALTHSUBCHAPTER r: WATER AND SEWAGEPart 925 — ILLINOIS WATER WELL PUMP INSTALLATION CODE925.ILLUSTRATION77 Ill. Adm. Code 925.ILLUSTRATIONA Backflow Preventer Check Valve For Agricultural WellsLast amended: 1992Year: 2026Length: 10 wordsOfficial source Section 925.ILLUSTRATION A Backflow Preventer Check Valve For Agricultural WellsPrevious77 Ill. Adm. Code 925.50Next77 Ill. Adm. Code 925.ILLUSTRATION A