Water System

Purcellville obtains its water from surface water and ground water as described below. The surface water source is the J.T. Hirst Reservoir, built about 1955, which has an operational capacity of 300,000 gallons per day (gpd). The storage capacity of the reservoir is about 29 million gallons. The reservoir is filled by three primary water springs: Harris Spring, Potts Spring, and Cooper Spring. Cooper Spring is piped (gravity line) to a 12-inch pipe just below the reservoir which carries water to the water treatment plant for filtration. The Harris and Potts springs flow directly into the J.T. Hirst Reservoir. Forbes/Cornwell Well System, Main Street Village Well System, Mountain View Well System and Hirst Farm Well System are the ground water sources and collectively have a capacity of 753,000 gpd. The total production capacity is 1,053,000 gpd including the reservoir. The current average use is about 563,000 gpd. The Town owns 1,272 acres around the reservoir and three springs, including much of the watershed for the reservoir.

The water treatment plant, initially built in 1985 and expanded in 2000, consists of a high rate water filtration plant with chemical addition capabilities. Chemical treatment includes aluminum sulfate for filter performance, chlorine for disinfection, fluoride for tooth decay, potassium permanganate for iron and manganese control, and phosphate for water system corrosion control. There are two water tanks in the system; one has a capacity of 200,000 gallons and the other 1.0 million gallons. There are 47 miles of pipeline in the system. The plant has a capacity of 600,000 gpd but is limited to 300,000 gpd by the reservoir capacity. Currently, there are 2,259 residential and 295 commercial customers. Water bills are mailed every two months and there is an option for online payment.

Water Conservation


Using water wisely is a responsible action by all residents and businesses. It help the long-term viability of our water supply and it helps you reduce costs. Check our our Water Conservation page for more information and helpful tips.

Contact Information


Water Treatment Facility: 540-338-2513 Water Treatment Facility Fax: 540-338-7082
Water Quality Complaints Please contact: 540-338-2513
Water Service Complaints Please Contact: 540-338-7440, ext. 221
Water Billing Questions: 540-751-2328

Important Documents


Source Water Protection Plan (SWPP)
Water and Wastewater Rates & Fees
Water Emergency Ordinance
Drinking Water Quality Reports
Purcellville Water Charts
Tap Water vs Bottle Water
TapIt Campaign
Water Demand Reports