US lawIllinoisRegulationsTitle 77 ā PUBLIC HEALTHCHAPTER I: DEPARTMENT OF PUBLIC HEALTHSUBCHAPTER r: WATER AND SEWAGEPart 900 ā DRINKING WATER SYSTEMS CODE900.TABLE D77 Ill. Adm. Code 900.TABLE DD Coliform Sampling Frequency According to Population Served (Repealed)Last amended: 1995Year: 2026Length: 13 wordsOfficial source Section 900 Section 900.TABLE DĀ Coliform Sampling Frequency According to Population Served (Repealed)Previous77 Ill. Adm. Code 900.TABLE CNext77 Ill. Adm. Code 900.TABLE E