Backflow Testing in Burke, VA

Who can test a sprinkler assembly in Burke?

Fairfax County Land Development Services runs the cross-connection program with Fairfax Water, and it is strict about who does the work. The tester must be certified by the Virginia Department of Professional and Occupational Regulation as a Backflow Prevention Device Worker and must appear on the County's authorized vendor list. Lawn irrigation needs a testable assembly rated for a high hazard, and it has to be checked every year, along with assemblies on fire sprinklers, in-ground pools, directly connected hot tubs and steam saunas. A test by someone outside that list will not satisfy the County, so ask before you book.

My Kings Park house is from the 1960s. Where would the device even be?

Burke stayed rural into the mid-1900s, then filled in with Kings Park and later subdivisions, plus the Burke Centre planned community. The median home was built in 1979, and in many older houses the sprinkler system came later. The assembly is usually outside, on the irrigation branch where it leaves the house, often a vacuum breaker or reduced pressure unit standing above ground near the foundation. If you cannot find one at all, that is worth a plumber's look, because an irrigation system with no protection is exactly the connection the County program targets.

What if the device fails?

Most failures come from worn rubber discs, weak springs or grit holding a check open. A plumber can usually rebuild the assembly with a kit and retest it the same day. Fairfax Water's moderately hard to hard water leaves deposits over time, and Burke's cold winters split devices that were not drained. A cracked body, or a model whose parts are no longer made, means a new assembly, and installing or replacing an irrigation assembly requires a Fairfax County plumbing permit through PLUS.

One local note

Homes around Burke Lake Park, Lake Braddock and Rolling Valley West often have mature landscaping that has grown over the device. Before the visit, trim back shrubs, turn off the sprinkler controller and find the irrigation shutoff inside the house. If water is spraying from the assembly now, close that shutoff and leave the rest to the plumber.