FAUQUIER COUNTY WATER AND SANITATION AUTHORITY is categorized under WATER & SEWAGE COMPANIES: UTILITY and located at 7172 Kennedy Road 20187 in or near the Warrenton, VA area. Call (540) 349-2036 or (866) 448-4100 (Toll-Free). Fax (540) 347-7689 . Find additional information including website, email, map, and directions - fcwsa.org.