Unexplained high bill
Water usage has increased without a clear change in occupancy or normal demand.
Water Usage Symptom
Water Bill Suddenly Increased
A sudden high water bill can be an early warning sign of a hidden leak.
Unexpected water usage should be investigated before excavation, repairs or billing disputes are pursued.
- High Water Bills
- Running Meters
- Mains Water Leaks
Causes
What Causes This Problem?
The underlying cause is not always visible. A structured investigation helps separate surface symptoms from the source of water escape.
Hidden mains water supply leak
Underground pipework leak
External supply pipe failure
Water meter constantly running
Concealed internal pipe leak
Leak between meter and property
Signs
Common Signs
Meter keeps moving
The water meter may continue running even when taps and appliances are off.
Wet ground outside
Soft ground, damp paths or wet areas can indicate a supply pipe leak.
Reduced pressure
Some supply leaks can affect water pressure or flow at the property.
No visible water
Underground leaks can lose water without obvious internal damage.
Repeated utility concern
Supplier warnings or abnormal meter readings should be investigated promptly.
Timing
When To Investigate
The bill is abnormal
A sudden unexplained increase should be checked before accepting ongoing water loss.
The meter runs continuously
Movement while everything is switched off can indicate a leak on the supply.
Excavation is being considered
Leak detection should take place before digging across driveways, paths or gardens.
Investigation
How Leak Detection Helps
Checks supply pipe routes
External and underground pipework can be investigated before excavation.
Uses targeted methods
Tracer gas and acoustic detection help narrow the likely leak location.
Supports next steps
Findings help inform repairs, supplier discussions or insurance evidence.
FAQs
Water Bill Suddenly Increased FAQs
Can a hidden leak cause a high water bill?
Yes. A leak on the mains supply or concealed pipework can increase usage without obvious visible water.
Why is my water meter constantly running?
If the meter moves when all water outlets are off, it may indicate a leak between the meter and property or within hidden pipework.
Can you find underground water leaks?
Yes. Tracer gas, acoustic detection and pressure testing can be used where conditions are suitable.
Do you need to dig straight away?
No. Non-destructive leak detection is used first to help narrow the likely leak location before excavation.
Can findings help with the water supplier?
Written findings can help document the investigation and support discussions about abnormal usage or repairs.
Get Expert Help
Request A High Water Bill Leak Investigation
Tell us what symptoms you are seeing, the property type and postcode. A specialist can advise the most practical next step.
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