External Leak Investigation

What this service covers

External leaks can be hard to spot, especially when pipework is buried, partially concealed, or only used seasonally. This investigation focuses on finding the cause of unexplained water loss linked to outside plumbing.

• Checks to confirm whether the leak is internal or on external pipework
• Visual inspection of exposed outdoor pipework, valves, and fittings
• Assessment of outside taps, garden supply lines, and outbuilding feeds
• Isolation tests to narrow down the affected section where possible
• Practical advice on the most appropriate repair approach and priorities
• Written summary of findings and clear recommendations on next steps

When this is the right service

Book an external leak investigation if you notice any of the following:

• Your water meter moves when no water is being used
• A sudden increase in water bills or unexplained water loss
• Damp patches outdoors, soft ground, or persistent puddling in dry weather
• Low water pressure that comes and goes
• Repeated issues with outdoor taps or pipework after cold weather
• A suspected leak feeding a garage, outbuilding, or garden supply

How the investigation is carried out

The visit starts with a few targeted questions about symptoms, recent changes, and when the issue occurs. The system is then checked and tested to confirm whether the problem is likely outside the property footprint.

Next, accessible external components are inspected and the pipework is assessed section by section where possible. You will be talked through what’s been found, what is still uncertain (if anything), and the most cost-effective way to move forward.

What happens after the investigation

If a likely fault is identified, you will receive clear options for repair, including what can be fixed immediately and what may need a return visit. Where further tracing is needed, you will be advised on the best next step before any additional work is carried out.

Ongoing value and prevention

External plumbing is more exposed to frost, ground movement, and accidental damage. After the investigation, you can also get guidance on practical measures such as protecting vulnerable sections, improving isolation points, and reducing the risk of repeat leaks.