Public Water Authority
Fairfax County Water Authority (Fairfax Water)
Serving Fairfax County and regional Fairfax Water service area
Population served
1,121,613 people (EPA SDWIS active CWS PWS VA6059501)
State system code
FIPS 51
Billing frequency
A dedicated this detail was not publicly posted. Statement controls the account cycle.
Provider briefing
How this utility’s billing works
Fairfax County Water Authority (Fairfax Water) operates as a public water authority serving Fairfax County and regional Fairfax Water service area. 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 Metered water and sewer charges with peak-use billing; new accounts pay a slightly higher usage rate until winter-quarter consumption is established. Fairfax Water approved rate changes effective April 1, 2026.. Bills are generated a dedicated this detail was not publicly posted. statement controls the account cycle., and a typical residential cost reference is A dedicated this detail was not publicly posted. Exact cost depends on meter size, winter-quarter/peak-use calculation, Fairfax Water charges, and any Fairfax County sewer 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
Fairfax Water and Fairfax County/Town of Vienna sewer charges may be billed quarterly through billing agents; peak-use and winter-quarter rules apply to the account, not a universal flat percentage.
Meter and infrastructure notes
Fairfax Water provides usage history and peak-use calculations; the reviewed pages did not identify one universal AMI vendor or transmission interval.
Emergency water support
Report a leak or water emergency
703-698-5613 for Fairfax Water emergency service; confirm current routing before relying on the number.
Official starting point
Choose the right next step
Reading this profile
A practical reference for Fairfax County and regional Fairfax Water service area
Fairfax County Water Authority (Fairfax Water) 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.