Castle Rock Water is securing a strong water future. In addition to providing 72,000 residents with drinking water, wastewater service and stormwater protection, ensuring a sustainable water future is a top priority. Once solely reliant on the slowly diminishing groundwater, Castle Rock is transitioning to renewable sources which is projected to make up more than 75 percent of all water used in Town by 2055. These renewable sources include local surface water, imported supplies, storage in reservoirs, conservation, and reuse. Renewable water projects include adding surface water wells, expanding the imported WISE water supplies and securing water sources into storage facilities. Castle Rock Water is expanding the Plum Creek Water Purification Facility and distribution lines to fully utilize potable and non-potable reuse water by 2020.