A water meter moving when you believe everything is off can be a useful warning. It does not tell you where the water is going. Before concluding that a pipe under the slab is leaking, account for the devices that can use water without someone turning on a faucet.
For McKinney homeowners, a short observation log can help separate an unexplained pattern from an incomplete check.
Account for automatic water use
Consider toilet refill cycles, an ice maker, irrigation, pool autofill, and water-treatment equipment. Review the normal operating instructions for equipment you own. Do not disconnect equipment or close unfamiliar valves just to force a particular test result.
Tell everyone in the house about the observation period. A dishwasher starting upstairs or a hose being used outside can change a meter reading even when the kitchen faucet is off.
Record a controlled comparison
The EPA recommends comparing meter readings before and after two hours without water use. A change can indicate a leak. Record the readings and times, and note any automatic use that may have occurred.
Only access a meter you can reach safely and are permitted to inspect. Do not tamper with utility equipment. If the meter is unreadable, inaccessible, or shared, ask the utility how to obtain a useful reading.
A stable reading during one interval does not explain every intermittent problem. Equally, a change during an uncontrolled interval does not prove an underground pipe failure. The conditions of the observation matter.
Look for accessible clues
Without opening walls or digging, note visible drips, a toilet that refills unexpectedly, damp areas, or water near exposed equipment. Describe where the water appears and when. Water can travel, so the wettest visible spot is not automatically the pipe's failure point.
Keep copies of recent bills showing usage and dates. If the concern began after an irrigation schedule change or repair, include that history. These details can help a technician choose a logical investigation sequence.
Ask for isolation before excavation
When unexplained use persists, ask the contractor how it will narrow the source. Which parts of the property share the meter? Can the investigation distinguish household plumbing from irrigation or another branch? What access is available?
The goal is an evidence-based repair recommendation. Ask for the findings, limitations, and proposed next step in writing before authorizing disruptive work. A detection appointment should help explain why a particular area merits attention.
Frequently asked questions
Does meter movement prove a slab leak? No. First account for authorized and automatic water use, then investigate the source of any unexplained flow.
Could the toilet be responsible? Yes. A toilet can lose water without an obvious puddle.
What if the reading stays unchanged? Record the result. An intermittent symptom may require observation under different conditions or professional evaluation.
Should I turn the utility's valve? Do not operate unfamiliar or utility-controlled equipment. Ask for guidance on your property's accessible customer shutoff.
Can I wait until the next bill? Active water damage needs prompt attention. Do not delay solely to collect another billing cycle.
Get unexplained water use checked
Call Lone Star Leak Locators at 972-333-5448 to discuss water leak detection for your McKinney property. Bring your readings, symptom log, and recent repair information.
For a related explanation, read Lone Star's hidden water leak and high-bill guide; that article discusses the same diagnostic distinction for Plano homeowners.
Schedule a leak detection visit
Receive written findings and a Certified Master Plumber Report from Lone Star Leak Locators. Call to discuss the scope for your property.