How to Read Your Water Meter
Your water meter records metered water use, and many meters also show a low-flow or leak indicator. Movement when the property should be using no water is a useful clue, but first rule out toilets, irrigation, appliances, water treatment, humidifiers, ice makers, and other automatic users before treating the flow as unexplained.
- Want to check for a hidden leak
- Water bill seems high
- Suspect a running toilet or slow leak
- Want to monitor household water usage
- ✓Turn off known fixtures, appliances, irrigation, water treatment, and automatic water users before testing.
- ✓Find the meter and note the current reading or low-flow indicator without disturbing utility-owned equipment.
- ✓If the reading changes during a no-use period, water is being metered somewhere; isolate toilets and other automatic users before assuming a hidden pipe leak.
- ✓A longer no-use comparison can help detect very small or intermittent flow, but verify that no appliance cycles during the test.
- ✓A building-side shutoff can help isolate upstream vs. downstream flow when its location is known; utility/customer responsibility still depends on the serving utility's rules.
If metered flow remains unexplained after isolation checks, pressure testing and thermal, moisture, or acoustic tools may help narrow the source. No non-invasive method guarantees an exact point in every building or underground condition.
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Reviewed by Paul Hall, Owner & Licensed Plumber
The Classic Plumber · Knoxville, TN · License #4268
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Note when the problem started, which fixtures are affected, whether it is constant or intermittent, and any recent plumbing work. Photos of accessible equipment and model labels can help. Describe any checks you have already tried without opening equipment or entering an unsafe area.