In a Rialto plumbing emergency, close the main, and if you smell gas, leave and call 911 and SoCalGas at 1-800-427-2200. Rialto has three water providers, so who fixes a street-side leak depends on your address. For problems on your property, call the number on this page to be connected with a local plumber in Rialto.

Who supplies my water in Rialto?
That depends on where you live. Rialto is served by three water retailers: the City of Rialto through Rialto Water Services (operated by a third party), West Valley Water District, and Fontana Water Company. The City's own system relies mainly on local groundwater. Your water bill names the provider, and that is who to call when the leak is in the street or at the meter.
Two of those providers publish emergency lines: West Valley Water District at (909) 875-1804, option 7, and Fontana Water Company at (909) 428-8746, which it lists as its 24-hour emergency number. Fontana Water Company also asks customers to use their own gate valve rather than its angle stop or meter valve to shut the water off. City of Rialto water customers should use the contact on their bill.
What counts as a real emergency?
Anything that is actively causing damage or a health risk: a supply line spraying water, a ceiling soaking through under a bathroom, sewage coming up in a tub or shower, a water heater leaking from the tank, or the sound of water running behind a wall with every fixture off. A gas odor is a safety emergency first: leave, then call 911 and SoCalGas from outside. A dripping faucet, a slow sink or a toilet that runs now and then can wait for normal hours and a normal rate.
Will the repair need a permit?
Stopping the leak comes first and rarely waits on paperwork. Permanent replacements, such as a new water heater or a rebuilt supply or sewer line, go through the City of Rialto Community Development, Building & Safety Division, which takes permit applications online through its EnerGov portal and can be reached at 909-820-2505. A plumber can tell you whether your job needs one. Expect after-hours visits to cost more than weekday service, and ask about pricing before work starts.
One local note
Like much of the Inland Empire, Rialto is slab-on-grade country, so hidden supply leaks often show up as a warm floor or a meter that never stops. If you see that, close the main and call. Arrival depends on the hour and the plumber's schedule; no time is promised.
Emergency Plumber questions in Rialto
How do I find out which water company serves my address?
Who do I call about a water main break or a leak in the street after hours?
Can I close the valve at the water meter myself?
Sewage is backing up into a tub or shower. What should I do first?
More plumbing services in Rialto
Emergency Plumber nearby
Sources
Last updated: