To provide a water socket capable of sharing floor piping with ceiling piping.

While a faucet body block having an introduction watercourse 6, a derivation watercourse 9 and a valve body 60 is stored in a housing 2, a flow adjusting member 10 for adjusting the flow rate of water capable of being derived from the derivation watercourse 9 is provided by making an opening and closing operation of the valve body 60, a piping connection member 13 connecting piping P for supplying water to the derivation watercourse 6 is provided, the water socket is formed by providing a discharge port 8 to the derivation watercourse 9, and in the water socket 1 installed in a mounting hole h formed in the ceiling, a wall W, a floor or a mounting panel, a through-hole 17 vertically passing thorough the faucet body block 11 is provided so that the piping connection member 13 can be fitted from either the upper place and the lower place of the faucet body block 11.