Buried 2 to 3 feet beneath your pool deck, Schedule 40 PVC return lines carry filtered, chemically treated water back into the pool under 15 to 25 PSI pressure. When ground movement cracks a glued PVC elbow, finding the break under concrete is crucial.
Hydrostatic Pressure Testing Protocol
We install inflatable pneumatic test plugs into each return eyeball fitting and skimmer port. We then pressurize the isolated line with nitrogen gas and water to 20 PSI. If the pressure gauge decays, an underground pipe break is confirmed.
Ultrasonic Hydrophone Listening
Our technicians submerge sensitive underwater listening hydrophones to pinpoint the sound of water spraying through the crack beneath the pool deck.