Backflow Testing in Woodbridge, VA

Signs you need a backflow visit

• Prince William Water's annual recertification notice arrived for a device at your address
• A sprinkler assembly in Lake Ridge or Belmont Bay drips from the relief port
• The last test failed and the repair never happened
• A business near Potomac Mills is adding equipment that ties into the water supply
• Ice cracked the device or a test cock over the winter
• Irrigation pressure dropped after work on the valve

Local conditions in Woodbridge

Woodbridge is an unincorporated community, not a town, and its postal area also takes in Lake Ridge, Dale City, Marumsco and Belmont Bay. Prince William Water provides water and sewer to most of it, using Occoquan Reservoir water treated at Fairfax Water's Griffith plant. Its cross-connection rules put the duty on the owner of a testable device: a test at installation or repair, then once a year, by a certified backflow testing company, with results sent to the Cross Connection Coordinator. The utility sends annual recertification notices, and its cross-connection office is reachable at (703) 335-8947.

Parts of the postal area around Dale City are on Virginia American Water's Prince William system instead. If that name is on your bill, ask Virginia American Water about its rules rather than following Prince William Water's. Prince William Water rates its water as moderately hard, 3.5 to 7.0 grains per gallon, and the median home here was built in 1987, so many sprinkler assemblies are on their original internals. New or relocated assemblies go through Prince William County Development Services' Building Development Division for any permit.

What affects the cost

• Result. A pass is a short visit; a fail adds a rebuild and a retest.
• Device type and size. Commercial and reduced pressure assemblies take longer than a home vacuum breaker.
• Replacement. A cracked or obsolete body means a new unit and possibly a permit.
• Reporting. Ask whether sending results to the Cross Connection Coordinator is included.

What happens when you call

You are connected with an independent plumber who works around Woodbridge. Read off the device details on your recertification notice, mention which utility bills you, and ask the plumber to confirm their backflow testing certification. If water is spilling from the assembly, close the irrigation shutoff or the main valve until the plumber arrives.