Called out for high pressure and to replace a sink drain. Upon arrival, met with customer and tested water pressure at back hose faucet. Water pressure is at 65 psi. 65 psi is perfect water pressure for a house of this size. Inspector checked water pressure originally at front hose faucet which is tied into water line before the pressure regulator valve. Found sink drain line had an accordion tail piece. Removed accordion tail piece and replaced with all hard pipe p-trap, tailpiece, and trap arm. Tested for leaks. No leaks were found. Cleaned work area.