US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 4 — Department of Environmental Quality - Safe Drinking WaterR18-4-253R18-4-253R18-4-253. RepealedRepealedLast amended: 1991Length: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-4-253R18-4-253. RepealedPreviousR18-4-252NextR18-4-254