Operational for more than 60 years, the Washington County Service Authority offers distribution and treatment services for drinking water. It serves more than 20,500 water and over 1,500 wastewater customers throughout Virginia. The authority has a water system of more than 900 miles of water line and filtration plant membrane of over 2 million gallons of daily capacity. The Washington County Service Authority serves residential and industrial customers. It also publishes Economic Development Guide that promotes the advantages of doing business in Washington County. The authority offers various payment options, including online, mailed and automatic bank draft payments. It works under the Washington County Sanitary District. The Washington County Service Authority maintains its office in Abingdon, Va.