Loudoun Water’s secure, state-of-the-art Trap Rock Water Treatment Facility, located in Leesburg, is designed to meet or exceed drinking water regulations to ensure that you have the highest quality drinking water available today – and for years to come. Trap Rock currently provides about 10 million gallons per day of potable water to our customers.
Trap Rock Water Treatment Facility officially opened in May 2019 and was designed to be expandable and the processes scalable to meet the future demand of the rapidly growing community. Beyond providing safe, clean drinking water, the Trap Rock Water Treatment Facility features attractive architecture that was constructed using low-impact development principles. Sustainable materials, technologies and management practices were used to design the administration building of Trap Rock Water Treatment Facility for LEED certification.
The water treatment process includes two-step ozone, two-stage mixing, flocculation, sedimentation, biological filtration, chlorine disinfection and ultraviolet inactivation systems to treat water from the Potomac River.
Loudoun Water took an overall low-impact development approach to building and construction by utilizing recycled building materials, establishing rain gardens to capture storm water, and by incorporating an ultra-efficient HVAC system. The Trap Rock Water Treatment Facility is part of the Potomac Water Supply Program.