El Dorado County Water Agency Share: Government Agencies El Dorado County Water Agency Visit Website 4110 Business Drive Suite B Shingle Springs, CA 95682 530/621-5392 About Map About The El Dorado County Water Agency is authorized by Chapter 96 of the 1959 Water Agency Act. The EDCWA Mission is to ''Ensure that El Dorado County has adequate water for today and in the future.'' What's Nearby? Distance: 5 10 15 20 25 50 mi.