Sewer Rates and Billing
Billing policies and sewer rates are established by the Board of Supervisors as prescribed by Article 10, Chapter 67.1 of the County Code. Rates and code language are reviewed annually by county staff as part of the county’s annual strategic planning and budgeting process and revised as necessary. Following are specific billing practices:
Residential customers are billed for use of the sanitary sewer
system based on water consumption during the current billing period or
the preceding winter quarter billing period, whichever is lower. This
prevents residential customers from being charged for sewer use on
water used outdoors during the summer.
Residential customers who use the county’s sanitary sewer system, but obtain water from a well, are charged based on the number of persons residing in the home.
Commercial customers are billed for sewer use based on their
actual water consumption. Some commercial customers use meters to
separately measure water that does not drain to the sanitary sewer
system, such as water used for irrigation or cooling systems. These
metering arrangements do not benefit residential customers, whose
winter quarter water consumption limits the amount of sewer usage
billed in the summer months.
Commercial customers who use the county’s sanitary sewer system, but obtain water from a well, are charged based on the number of fixture units in the commercial building.
A Sewer Base Charge, for all customers, became effective with the billing period beginning July 1, 2009. The base fee is to partially recover fixed expenses for billing, wastewater collection, engineering, planning and administration.
Sewer service charges are billed and collected in quarterly combined water and sewer billings through three water billing agents. To establish a sewer billing account contact the appropriate water supplier:
- Fairfax Water, 703-698-5600, TTY 711
- City of Falls Church, 703-248-5071, TTY 711
- Town of Vienna, 703-255-6385, TTY 711
Contact the Wastewater Planning and Monitoring Division at 703-324-5015, TTY 711, with questions regarding sewer service charge rates and billing.