Main Water Line Repair in Los Angeles

Restoring the line that feeds your whole house

The water service line runs underground from the meter, usually at the curb or sidewalk, to the house. In older Los Angeles homes it's often original galvanized steel, which rusts from the inside until the pipe's opening is a fraction of its original size — the root cause of weak pressure at every faucet. Copper and early plastic lines can leak at joints or get damaged by roots and digging.

We start by confirming where the problem is: on the line itself, at the main shut-off valve, or at a failed pressure regulator. Leaks underground are traced acoustically along the line so only the leaking section needs to be exposed. Pressure problems are measured at the meter and at the house to see where pressure is being lost.

For a single leak on a sound line, a section repair is quick. For a corroded galvanized or failing line, we replace the whole service line in copper or PE/PEX — often by pulling new pipe through a small bore under hardscape instead of trenching. While we're at it, we replace the main shut-off with a modern ball valve and install or replace the pressure regulator to protect everything downstream.