The water supplied to Parker Water & Sanitation District’s (PWSD) customers is a combination of groundwater and surface water. The groundwater is pumped from Denver basin aquifers and the surface water is stored in the Rueter-Hess Reservoir and treated through the Rueter-Hess Purification Facility. Thirty wells, the water treatment plant, and four booster stations supply water to five storage tanks with a combined storage capacity of 20 million gallons. In accordance with Colorado Primary Drinking Water Regulations, the water is disinfected by the addition of chloramine. To further enhance water quality, PWSD adds a kosher food-grade sequestering agent (SeaQuest) designed to minimize the effects of iron and other minerals within the water distribution system.