How to Detect a Hidden Water Leak in Your DFW Home

Start with the meter test, then eliminate the obvious candidates — running toilets, irrigation, outdoor faucets. If you still have a confirmed leak, electronic and acoustic detection locates it in the wall or slab without opening everything up first.

Most hidden water leaks in DFW homes are found within a few hours of systematic investigation. The process is methodical, not guesswork.

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Step 1: Confirm You Have a Leak

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Shut off all water-using appliances and fixtures — ice maker, irrigation controller, washing machine. Note your meter reading. Wait one hour without using any water. If the meter has moved, a leak exists somewhere in the system.

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Step 2: Isolate Inside vs. Outside

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Locate your main shutoff valve (usually at the water meter or where the main line enters the house) and shut it off. Check the meter again. If it's now stopped, the leak is inside the house. If it's still moving, the leak is between the meter and the main shutoff — likely in the supply line from the street.

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Step 3: Eliminate Common Sources

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Check every toilet with the food-coloring test. Check under every sink for drips. Check water heater connections, washing machine hoses, refrigerator ice maker lines, and outdoor hose bibs. Most leaks found at this stage are fixing-a-running-toilet simple.

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Step 4: Professional Leak Detection

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If Steps 1–3 confirm a leak exists but you can't find the source, the leak is in a hidden pipe — in a wall, ceiling, or under the slab. Electronic leak detection uses amplified listening equipment to hear the sound of water escaping under pressure. Thermal imaging can detect temperature anomalies from hot-water slab leaks. These methods find the leak without opening walls or jackhammering concrete speculatively. Call Staggs Plumbing at 682-284-0966.