Rialto is served by three water retailers: the City of Rialto through Rialto Water Services, West Valley Water District and Fontana Water Company, depending on the address. A leak between the meter and the house is generally a private repair that a plumber can find and fix. Call the number on this page to be connected with a local plumber in Rialto.

How do I know which Rialto water company to call?
Check the bill. The City of Rialto supplies part of the city through Rialto Water Services, a city system run by a third-party operator that relies mainly on local groundwater from city wells. West Valley Water District and Fontana Water Company serve other parts. West Valley's customer service is (909) 875-1804, option 3, and option 7 reaches its emergency services. Fontana Water Company's emergency number is (909) 428-8746. If water is boiling up at the meter box or out of the street, that call goes to your supplier, not a plumber.
Is the leak on my side or theirs?
The meter is the usual dividing point. Wet ground in the yard between the meter and the house, a damp spot at the foundation, or a meter that keeps moving after you close every faucet all point to the private service line. Water at the curb or inside the meter box points to the supplier. Each of the three sets its own rules, so confirm the exact handoff with yours. Fontana Water Company customers in Rialto should know that the company treats the angle stop and meter valve as its property and asks customers to shut off at their own gate valve instead.
What will a repair involve?
First the plumber confirms the leak and traces the line, which may not run in a straight path from the meter. Then comes a choice: fix the single failed section, or replace the line if it has leaked before or the pipe is brittle. A replacement usually needs a permit from the City of Rialto Building & Safety Division, at 150 S Palm Avenue, phone 909-820-2505, with online permits through the city's EnerGov portal. Driveways, block walls and trees along the route add digging and restoration time, and trenchless methods can cut down on that where the soil cooperates.
A Rialto note
Because three suppliers serve one city, a friend across town may deal with a different water company than you do, and advice that fit their lot may not match the rules on yours. Keep your gate valve working, know where your meter box sits and keep the bill handy when you call. That speeds up the first conversation with the plumber.
Water Line Repair questions in Rialto
How do I find out which water provider serves my address?
Can I shut the water off at the meter valve?
Do I need a permit to repair or replace the water service line?
Will an 811 locate mark my private water line?
More plumbing services in Rialto
Water Line Repair nearby
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