US lawIllinoisRegulationsTitle 77 — PUBLIC HEALTHCHAPTER I: DEPARTMENT OF PUBLIC HEALTHSUBCHAPTER r: WATER AND SEWAGEPart 930 — SURFACE SOURCE WATER TREATMENT CODE930.ILLUSTRATION B77 Ill. Adm. Code 930.ILLUSTRATION BB Filter ValvingLast amended: 2003Year: 2026Length: 7 wordsOfficial source Section 930 Section 930.ILLUSTRATION B Filter ValvingPrevious77 Ill. Adm. Code 930.ILLUSTRATION ANext77 Ill. Adm. Code 930.TABLE