Backflow happens when water pressure changes cause water to flow in the wrong direction through a plumbing system — potentially pulling contaminated water back into the clean supply. A backflow preventer is the device that stops this, and many municipalities require one, particularly on irrigation systems and certain plumbing fixtures.
A failing or missing backflow preventer isn’t always obvious day to day, which is exactly why annual testing exists as a requirement in many areas — the risk is invisible until a pressure drop actually triggers it.
A local plumbing professional can test an existing backflow preventer for proper function, install one where required, and handle the documentation many local water authorities require after testing.
A local plumbing professional will confirm what’s going on, walk you through the options, and give you pricing and scheduling directly — no markup added by us, no work performed by us.