In California, my last two homes had those pesky anti-siphon adapters permanently mounted on each outdoor faucet. They are supposed to prevent water from flowing backward if the city water pressure were to suddenly drop. The backflow could supposedly lead to contamination of the water supply. These one way valves always leak and if you turn off the faucet while the garden hose is pressurized, the anti-siphon valve will discharge the pressure in the hose through some vent holes. This is when you will get a face full of water as the valve vents.
Do any of you know if these things are required per some state or local code? If I remove them, what is my liability? Do you inspect for these during home inspections? Is this just a California thing?
Thanks in advance for your feedback.
Greg Sullivan / Canyon Lake, CA.