US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 4 — Department of Environmental Quality - Safe Drinking WaterR18-4-285R18-4-285R18-4-285. ReservedReservedLength: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-4-285R18-4-285. ReservedPreviousR18-4-284NextR18-4-286