Water Authority & Utility Leak Reports
Independent professional leak reports for disputes with Thames Water, Affinity Water, and all UK water utilities. Also covers utility leak claims for other buried services.
Water Authority Leak Report Services
When a leak occurs on or near the boundary between a property owner’s responsibility and the water authority’s responsibility, disputes about who is liable can be complex and costly. An independent, professional leak report from Damp Mould Leak provides the documented evidence both parties need to resolve the dispute.
💧 Water Authority Boundary Leak
Independent leak detection and report where the responsibility boundary between property owner and utility company is disputed. Written for Thames Water, Affinity Water, and water companies.
📝 High Water Usage Report
If your water bill has spiked unexpectedly, a professional leak detection report documenting the location and cause of a hidden leak can support your application to the water company for a bill adjustment (available under the ‘Assessed Charges’ scheme).
🔥 Utility Damage Claims
Where a utility company’s works or buried services have caused water ingress or damp damage to your property, our reports document the cause and extent of damage for compensation claims.
📍 Supply Pipe Leak Report
The supply pipe from the water main to your property boundary is your responsibility. We locate leaks on supply pipes without excavation and produce the report needed for insurance claims or water company referrals.
The Water Authority Dispute Process
Water authority disputes follow a predictable pattern. Understanding the process helps you get the right documentation at the right time:
- High bill or visible leak identified: contact your water company to report the potential leak
- Water company inspection: they check up to the boundary of their responsibility
- Dispute arises: company says leak is on your side; you need independent verification
- DML independent detection: we locate the leak precisely using acoustic and thermal detection
- Written report issued: our professional report shows exact location and confirms responsibility
- Bill adjustment or repair authorised: water company or your insurer acts on the evidence
Thames Water bill adjustment: Thames Water offers a ‘Leak Allowance’ scheme. If you can prove a hidden underground leak has been repaired, they may credit up to 50% of the excess water charges. Our report is the key document for this application.
Frequently Asked Questions
Can you help if Thames Water says the leak is on my side?
Yes. Thames Water’s inspectors check up to the property boundary. They will not investigate your private supply pipe. If they say the leak is on your side, we provide independent leak detection using acoustic and thermal equipment to locate the exact position. Our written report confirms the location and can be used to claim against your home insurance or for a Thames Water bill adjustment application.
What is the Thames Water Leak Allowance scheme?
Thames Water offers a Leak Allowance (also called an assessed charge allowance) if you have had an underground leak that has now been repaired. You can apply for a bill credit of up to 50% of the excess water usage for the period the leak was active. You will need: a professional leak detection report confirming the leak existed and was underground, and evidence that the leak has been repaired. Damp Mould Leak provides the report; you make the application directly to Thames Water.
My water meter keeps turning even when no taps are on. What does that mean?
A water meter turning with all taps and appliances off confirms there is an active leak somewhere on the supply side of the meter, which means the supply pipe (your responsibility from the boundary) or internal pipework. We carry out a systematic check: first confirming the meter behaviour, then using acoustic ground microphones and correlation equipment to narrow down the leak location without excavation.
Can your leak reports support an Affinity Water claim?
Yes. Our leak detection reports are prepared to the standard UK water companies require, including Thames Water, Affinity Water and South East Water. We use calibrated, industry-standard equipment and produce reports in the format required for water company assessments and insurance purposes.
Can you locate an underground supply pipe leak without digging?
Yes, in most cases. We use acoustic leak detection (ground microphones and leak correlators) and thermal imaging cameras to locate underground leaks with a high degree of precision before any excavation is needed. This minimises disruption to driveways, gardens, and paths, and reduces the cost of reinstatement.
Get in Touch
Call us or WhatsApp for a quote across London and Surrey.
Last reviewed: 27 October 2026. Independent investigation and written reports. Repairs are quoted separately.