Public Water Authority
Prince William Water (formerly Prince William County Service Authority) - West System
Serving Western Prince William County
Population served
136,409
State system code
FIPS 51
Billing frequency
Monthly. Bills are rendered monthly, meters are read monthly, and payments are due within 24 days of the bill date.
Provider briefing
How this utility’s billing works
Prince William Water (formerly Prince William County Service Authority) - West System operates as a public water authority serving Western Prince William County. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.
The published water-rate framework is described as Monthly service charge plus volumetric water and wastewater charges; the 2025-2027 rate program maintains separate water and sewer components and different treatment systems for western and eastern Prince William County. The public FAQ reports a 2026 5,000-gallon average water-and-sewer bill of $88.85.. Bills are generated monthly. bills are rendered monthly, meters are read monthly, and payments are due within 24 days of the bill date., and a typical residential cost reference is $88.85 per month for a single-family residential customer using 5,000 gallons, based on Prince William Water’s published comparison table for rates effective July 1, 2026. Actual West System bills vary by meter/service size, wastewater treatment area, and any refuse or other account charges.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.
Wastewater and sewer calculation
The monthly bill combines a water service charge and a wastewater service charge. Western-area wastewater is treated at the Upper Occoquan Service Authority, while eastern-area wastewater is treated at the H.L. Mooney Advanced Water Reclamation Facility. The reviewed pages do not describe a residential winter-average formula; the utility calculates monthly volume from the meter reading and applicable rate schedule.
Meter and infrastructure notes
Meters are read and billed every month. If a meter cannot be read, the utility estimates consumption from the same month of the prior year when available, or from a daily average, then reconciles the estimate on the next actual reading. The reviewed pages do not identify AMI/AMR hardware or a remote transmission interval.
Emergency water support
Report a leak or water emergency
(703) 335-7990, Emergency Dispatch for water main breaks, service outages, and after-hours service restoration. Customer Service for billing and leak questions is (703) 335-7950 Monday-Friday 8:00 a.m.-5:00 p.m.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Western Prince William County
Prince William Water (formerly Prince William County Service Authority) - West System is listed here as a public water authority. The profile separates account actions—such as paying a bill or requesting service—from explanatory material about rates, meters, wastewater, leaks, and delinquency.
Because utility rules can vary by account class, meter size, service address, billing date, and local ordinance, treat the published bill and current provider website as the final authority. Use this profile to locate the correct channel and prepare better questions for customer service.
If your issue is urgent, start with the provider’s emergency number or official payment route rather than waiting for an email response. Keep a written record of calls, confirmation numbers, notice dates, and documents you submit.