Frequently Asked Questions 1. How is the water disinfected 1. Trees hinder maintenance of these lines. In addition, roots of the trees can damage the lines. State law requires that all underground utilities be marked prior to start of any work requiring excavation.
Underground utilities are color-coded.
For example blue represents water lines and green represents sewer lines. Please call us at 703.385.7920 or use Account Inquiry Application . There is no charge for this service. Portions of Fairfax County contiguous to the City of Fairfax are in the city's water service area and the county's sewer service area. Sewer bills for these areas are issued by the Fairfax County Water Authority.