Iowa 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.
Iowa is found in the Midwest, along with these other states: Ohio, Michigan, Indiana, Illinois, Wisconsin, Minnesota, North Dakota, South Dakota, Iowa, Nebraska, Kansas, and Missouri.
The last American Housing Survey Census indicates this region had 3,990,0002 households served by residential wells, with an average of 2.423 persons per household. The USGS estimates the population of self-supplied water supply users in Iowa to be 494,000, all of which were groundwater supplied.
- 934 community water systems use groundwater for 1,492,000 people
- 135 non-community, non-transient water systems use groundwater for 44,500 people
- 631 non-community, transient water systems use groundwater for 72,200 people
- 1,880 irrigation wells used serving 744 farms and 167,000 acres