Arizona Groundwater and Water Well Statistics
Few states can accurately or confidentially determine how many residential wells are in place. For each region, the American Housing Survey by the U.S. Census provides regional data.
Arizona is found in the West, along with these other states: Alaska, Hawaii, Washington, Oregon, California, Idaho, Utah, Nevada, Arizona, New Mexico, Colorado, Wyoming, and Montana.
The last American Housing Survey Census indicates this region had 1,540,0002 households served by residential wells, with an average of 2.73 persons per household. The USGS estimates the population of self-supplied water supply users in Arizona to be 218,000, all supplied by groundwater.
- 704 community water systems use groundwater for 2,720,000 people
- 201 non-community, non-transient water systems use groundwater for 123,500 people
- 556 non-community, transient water systems use groundwater for 106,100 people
- 4,940 irrigation wells used serving 1,960 farms and 315,000 acres