The answer to 'faucet installation overflowing' is that there are a few common causes, including an improperly installed faucet, a clogged drain, or a problem with the sink's overflow system. Symptoms may include water leaking from around the base of the faucet or the sink filling up quickly when the water is turned on.
If the faucet was recently installed, the most likely cause is that it wasn't properly secured or aligned. This can allow water to leak out around the base. Checking the mounting hardware and re-tightening the faucet may resolve the issue. A clogged drain can also cause water to back up and overflow the sink. Using a plunger or drain snake to clear the blockage may fix the problem.