In bedroom bathroom under lavatory faucet replace both hot and cold service valve and supply lines. Customer stated that there was a leak under lavatory faucet that was dripping into basement. Found leak on shark bite fitting for service valve on hot side. Recommended to customer to replace both service valves because both were Sharkbite and customer agreed. Shut water off to home and replaced both hot and cold service valve with new supply lines. Turned water back on and tested. No leaks present at this time. Also tested pressure and water pressure was about 72 psi. Turned faucet on and psi was dropping over 10 psi and stated to customer that Prv is starting to fail.