US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 4 — Department of Environmental Quality - Safe Drinking WaterR18-4-251R18-4-251R18-4-251. RepealedRepealedLast amended: 1995Length: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-4-251R18-4-251. RepealedPreviousR18-4-250NextR18-4-252