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Leak Detection in Fontana, CA

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Along Sierra, Cherry, Valencia and beyond, get connected with a plumber who locates hidden leaks with the right tools.

Think there's a leak in your Fontana home?
Call now to be connected with a local plumber in Fontana.
(951) 489-1530

If your Fontana meter keeps moving with the water off or a floor feels damp, a plumber can test each part of your plumbing to find where water is escaping. Accurate detection keeps the repair small. Call the number on this page to be connected with a local plumber in Fontana.

Technician with an acoustic leak detection headset and probe on a tile floor indoors, leak detection in Fontana, CA

What happens when you call

You'll be connected with an independent plumber who works in Fontana. Expect a few questions: what you've seen or heard, how long the bill has been high, and whether the meter moves with everything off. On site, the plumber usually checks fixtures and the water heater first, then pressure-tests the supply system in sections. If the loss is under the slab or underground, acoustic listening gear, thermal imaging or tracer gas can mark the spot.

What drives the cost

  • The number of sections that have to be isolated and tested
  • Access: open crawl space, finished walls, a slab or a buried yard line
  • Which detection tools are needed to confirm the location
  • The repair method, from a single fitting to rerouting a line through the attic
  • Any permit required by the City of Fontana Building & Safety
Call now to be connected with a local plumber in Fontana.
(951) 489-1530

Local conditions in Fontana

Fontana is unusual because water service is split among five providers, each with its own area: Fontana Water Company is the main one, with Cucamonga Valley Water District, West Valley Water District and two mutual water companies (Marygold and Crawford Canyon) serving other parts of the city. The city suggests calling Fontana Water Company first if you aren't sure who serves your address. Who you call about a leak at the meter depends on that answer.

Fontana Water Company also asks customers not to use the angle stop or meter valve to shut off water, because those belong to the company. Use your home's own gate valve instead. Knowing where that valve is before a leak gets worse saves a lot of water.

The median Fontana home was built around 1989, according to city-stats.com. Houses of that era often have copper supply lines in the slab or walls, plus original water heater connectors, angle stops and hose bibs that are wearing out.

Before the plumber arrives

  • Find your house shutoff (gate valve) and make sure it turns
  • Write down a meter reading, wait an hour with no water use, and read it again
  • Turn off the irrigation controller so it doesn't muddy the test
  • Clear access to the water heater, under sinks and around the toilet bases
  • Note any warm floor spots, stains or sounds and where they are

Leak Detection questions in Fontana

Can I use the valve at the meter to shut off my water?
Not with Fontana Water Company. It says the angle stop and meter valve are company property and asks customers to shut off water at their own gate valve instead.
How do I find out which water provider serves my address?
Fontana has five water providers with defined areas. Your bill will name yours, and the city suggests calling Fontana Water Company at (909) 822-2201 first if you're unsure.
Water is pooling at the meter box or the curb. Who should I call?
If Fontana Water Company serves you, its emergency number is (909) 428-8746. If another provider serves your address, call the number on that provider's bill.
Will the plumber have to break open walls or the slab to find the leak?
Usually not much. Pressure testing narrows the leak to one section, and listening or thermal tools mark the spot, so the opening is typically limited to where the repair goes.

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(951) 489-1530

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