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Water-meter observation
A meter that continues moving when water use is stopped can be a clue, though other plumbing fixtures or systems may be involved.
Explore topicDiagnostic Guide · San Antonio, TX
Slab Leak Detection in San Antonio
Accurate diagnosis helps distinguish a suspected slab leak from other plumbing or moisture problems. Learn what testing may involve and what to ask before work begins.
Explore Your Options
How Slab Leak Detection Is Evaluated
A professional chooses diagnostic methods based on the symptoms, pipe system, access, and initial test results.
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Pressure testing
Appropriate testing can help assess whether a plumbing line may be losing pressure.
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Acoustic and other locating methods
Specialized equipment may help narrow the likely leak area before repair decisions are made.
Explore topicBefore Testing
Clues to Document
Record symptoms and timing. These clues help guide an assessment but do not independently confirm a slab leak.
Check only when water use is stopped and it is safe to do so.
Note the location and whether it changes over time.
Compare recent bills with typical household use.
Describe when you hear water despite fixtures being off.
Assessment
What to Ask Before Approving Testing
01Which tests are appropriate?Ask why the method fits your symptoms and plumbing layout.
02What can the results show?Understand limits and whether more than one test may be needed.
03Will findings be documented?Ask for a clear explanation before authorizing repair work.
FAQs
Slab Leak Detection Questions
Can I confirm a slab leak by myself?
You can document clues, but a qualified professional may need diagnostic testing to establish the source.
Does a high water bill prove a slab leak?
No. Other fixtures, irrigation, and plumbing issues can also increase water use.
Should repairs start before the source is known?
Unless urgent action is needed to limit active damage, ask for the findings and proposed scope before authorizing repairs.
Make an Informed Next Step
Document what you notice, ask questions, and compare a qualified professional’s findings and written proposal before authorizing non-emergency work.
Questions to Ask a Provider