Close the main shutoff valve first, then open a low faucet or hose bib to drain what is left in the lines. A plumber cuts out the failed section, installs new pipe and checks the rest of the system for the cause. Call the number on this page to be connected with a local plumber in Riverside.

Do these things right away
- Shut off the water. In many slab-on-grade houses the main shutoff is outside near the front hose bib or where the line rises from the ground. If you cannot find it or it will not turn, the meter box near the curb has a valve, but that equipment belongs to Riverside Public Utilities, so call RPU at (951) 782-0330 if you need help there.
- Keep clear of electricity. Do not walk through standing water near outlets or appliances. Use the breaker panel only from a dry spot.
- Protect the water heater. If the break is on a hot line, turn off power to an electric heater or set a gas heater to pilot.
- Move valuables and start drying. Pull rugs and furniture out of the wet area and take photos for an insurance claim.
What breaks pipes in the Inland Empire
Riverside winters are mild, but frost does reach exposed pipes in colder spots, especially outdoor risers, hose bibs and lines in unheated garages. More often, a burst here comes from age or pressure. With a median home built around 1976, older galvanized lines can rust from the inside until a wall gives out. High street pressure is another strain: Riverside Public Utilities Water Rule 11 requires the customer to install and maintain a pressure regulator and relief valve wherever static pressure exceeds 80 psi. A regulator that has failed lets that pressure through to every pipe, hose and fixture. Earthquake movement and corroded fittings on water heaters and washers round out the list.
What the repair involves
The plumber opens enough drywall or ceiling to reach sound pipe on both sides of the break, removes the damaged length and joins in new copper or PEX. After the water is back on, the system is checked under pressure. A good plumber will also test the static pressure and look at the regulator, because replacing a pipe without fixing high pressure invites the next failure.
Signs it is time to think beyond one repair
- Pinhole leaks or green and white crust on other copper joints
- Rusty water from galvanized lines when a tap first opens
- A second burst within a short time
In those cases, ask about repiping.
What changes the cost
Where the break is, how much wall or ceiling has to open, the pipe material, after-hours timing and whether a regulator also needs replacing all affect the bill. Drying and drywall work usually come from other trades.
Burst Pipe Repair questions from Riverside homeowners
Where is the main water shutoff on a Riverside house?
Can I use the valve in the meter box?
Why would a pipe burst when it is not freezing?
Does high water pressure really matter?
Related plumbing services in Riverside
Helpful guides
Burst Pipe Repair in nearby cities and towns
Riverside County
San Bernardino County
Orange County
Sources
Last updated: