Backflow testing, without the runaround

The backflow preventer is the device that keeps water that has been sitting in your sprinkler pipe from flowing backward into the drinking supply. Where one is installed, the water utility requires it to be tested on a schedule, and the notice tends to arrive addressed to an owner who has never heard of the device it names. That letter is the single most common way a Northern Virginia townhome owner discovers the sprinkler system is theirs to maintain.

What the test involves

A certified test of the device’s check valves under controlled conditions, readings recorded, and the paperwork filed with the utility that asked for it. It takes well under an hour in a typical unit. If the device fails, we quote the repair or replacement in writing before touching anything, priced against the published table.

Who needs this

Mostly the owners of sprinklered townhomes and stacked units in Arlington and Alexandria, the Ashburn corridor, and the Woodbridge belt, because that is where the region’s residential sprinkler stock is. Well properties with sprinkler systems can carry a device in the design too; that side is covered on the well water guide.

The easy version

We track the due date after the first visit and reach out when the next test is coming, so the utility letter never surprises you twice. Testing pairs naturally with the system inspection, and doing both in one visit is the cheapest way to buy a year of not thinking about any of this.