Harlan County had an estimated population of 34,861 in 1999 with 52 percent on public water. The estimated 2008 population was 30,783 with 98 percent served by a water utility. In areas of the county not served by public water, about 83 percent of the households use wells and 17 percent use other sources.
The Water Resource Development Commission has prepared a report on water-supply infrastructure in Harlan County.
It is estimated that there are over 200,000 water wells in Kentucky.
The Kentucky Groundwater Data Repository, maintained by the Kentucky
Geological Survey, has information on over 50,000 of these wells. The
locations of wells and springs in the county for which data are available
is shown on the map
of wells and springs in Harlan County. Certified well drillers in Kentucky.