1 county-level rule, plus city-specific rules for 2 cities in Maricopa County, Arizona.
Verified from official government sources
The Phoenix Active Management Area, administered by the Arizona Department of Water Resources, sets groundwater rules across most of Maricopa County. Outdoor watering schedules are imposed by individual cities and water providers, not by county-wide ordinance, though AMA conservation requirements still apply.
2 cities in Maricopa County have their own water use rules rules. Each link goes to that city's dedicated page with code citations.
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Maricopa County Ordinance Hub →