Boundary Box & External Stop Tap Leak Specialists

Leaks within external boundary boxes and water meter chambers are common and can sometimes be difficult to diagnose correctly.

Thames Water Approved Contractor
Underground water main specialists
Experienced in utility-side investigations
Honest advice regarding responsibility
Fully insured

Boundary Box & External Stop Tap Leak Specialists

GC Maintenance specialise in identifying leaks associated with boundary boxes, external stop taps, meter connections, underground communication pipes and incoming water mains.

Advice is based on the condition of the existing supply, access, and whether repair or full replacement makes better long-term sense.

How We Can Help

  • Thames Water Approved Contractor
  • Underground water main specialists
  • Experienced in utility-side investigations
  • Honest advice regarding responsibility
  Call 020 3988 4985 Request a Quote

Who Is Responsible?

Responsibility for leaks can vary depending on where the issue is located.

We can investigate the issue and help determine where responsibility may lie before unnecessary works are carried out.

The Water Authority
The homeowner
Shared supply arrangements

Common Boundary Box Issues

Leaking fittings
Failed connections
Damaged boundary boxes
Cracked chambers
Underground pipe leaks near the meter
Faulty stop taps

Our Investigation Process

This helps determine whether the issue is before the meter, after the meter, within the boundary box itself, or related to the customer's supply pipe.

Meter testing
Pressure testing
Visual inspection
Excavation works
Leak detection
Isolation testing

Water Main Repairs & Replacements

Water main repairs
Boundary box excavations
New underground pipe installations
Moling works
Lead pipe replacement
New internal stopcock installations

Why Choose GC Maintenance?

Thames Water Approved Contractor
Underground water main specialists
Experienced in utility-side investigations
Honest advice regarding responsibility
Fully insured
Kent & South East London coverage

Need Advice About a Boundary Box Leak?

If you have noticed water inside your external meter chamber or suspect a boundary box leak, contact GC Maintenance today. Videos and photos of the meter chamber can often help us advise before attending site.