US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 611 — PRIMARY DRINKING WATER STANDARDSSubpart L611.52135 Ill. Adm. Code 611.521Routine Coliform Monitoring (Repealed)Last amended: 2018Year: 2026Length: 8 wordsOfficial source Section 611 Section 611.521 Routine Coliform Monitoring (Repealed)Next35 Ill. Adm. Code 611.522