Slab Leak Repair in Rialto, CA

Which water provider do I call in Rialto?

It depends on the address. Rialto is supplied by the City itself through Rialto Water Services, by West Valley Water District, and by Fontana Water Company, each in its own area. Your water bill names the right one. Call that provider if water is pooling at the meter box, the curb or the street, since those parts belong to the utility. If the meter test points to a leak inside or under the house, the provider will not fix it; that is work for a plumber.

How do I know it's under the slab and not somewhere else?

Start with the meter. With every fixture and the irrigation off, a moving meter means a leak. Then close the house shutoff: if the meter stops, the leak is inside the house; if it keeps going, it is likely on the line between the meter and the house. Indoors, a warm spot on the floor points to the hot line, while dampness along a wall with no fixture nearby points to either side. A plumber confirms with separate pressure tests on hot and cold lines, then listens through the slab with acoustic equipment to narrow the spot.

What will the repair look like?

For one failure in otherwise healthy pipe, the plumber can open a small section of floor, replace the bad piece and patch the concrete. If the line is long, has leaked before or runs under expensive tile, a reroute through the attic or walls is often the better long-term choice. Some homes with repeat leaks end up with a whole-house repipe. Permits go through the City of Rialto Building & Safety Division, which takes applications online through its EnerGov portal. Housing age varies across Rialto, so your plumber will judge the pipe by what testing shows.

One Rialto note

Rialto's city water system relies mainly on local groundwater. Hard water is common across the Inland Empire, and it shows up as scale on fixtures and in water heaters rather than as a direct cause of buried leaks. Still, it is worth asking for a quick water heater check while a plumber is already testing the hot side.