A bill can rise before a hidden leak creates an obvious stain. Toilets, fixture valves, supply lines, outdoor faucets and concealed piping can waste water continuously without making much noise.
Do not open sealed fuel, electrical or pressurized equipment. If water is actively escaping or wastewater is present, call for service and keep clear of hazards.
Check toilets first
A worn flapper or fill valve can pass water into the bowl around the clock.
Compare meter readings
With all fixtures off, continued meter movement may indicate water is still flowing.
Look under sinks
Feel around supply stops, braided lines, traps and cabinet bases for dampness.
Inspect appliance connections
Dishwasher, refrigerator and laundry supply lines can leak behind equipment.
Walk exterior fixtures
Outdoor faucets and buried service connections can waste water away from view.
Notice pressure changes
A new drop in pressure can accompany a supply problem, although it has other causes too.
The practical next step
Use the evidence you can observe, then get the system assessed.
Photos, timing and which fixtures are affected can all help. A qualified inspection turns those observations into a repair or replacement recommendation.
