Leak detection near Llangefni in Isle of Anglesey
Leak detection near Llangefni identifies hidden water leaks in the Anglesey town beside the River Cefni. ADI Leak Detection Isle of Anglesey arranges visits across the county through head office. Llangefni has a separate ADI Leak Detection town website for enquiries within the town.
Non-invasive leak detection
Acoustic, thermal and tracer gas
Trace and access claim reports
Which leak investigations cover the Llangefni area of Isle of Anglesey?
The River Cefni runs through Llangefni, where Pont Fawr and The Dingle mark different parts of the townscape. This Anglesey guide helps you describe a suspected water escape in LL77: identify the room, the surface showing moisture and the circumstances in which you first noticed it.
Llangefni’s 2021 built-up-area figures show a close balance between detached accommodation at 29.9% and semi-detached accommodation at 29.1%; terraces contribute 24.1%. Describe your own building’s extensions and internal levels when booking. Those details make the enquiry more specific than a housing category alone.
For an upper-room water problem in Llangefni, record whether it follows wet weather and identify the ceiling or roof junction involved. The conservation appraisal describes slate coverings and a varied roofscape with dormers and gables. Tell the booking team what is visible from accessible areas and whether there is entry to the roof space.
Which places around Llangefni are in this county guide?
This county guide describes the places and landscape around Llangefni.
- Llangefni LL77
Local landmarks and terrain
- River Cefni
- Pont Fawr
- The Dingle
Who handles supply-pipe leaks around Llangefni in Isle of Anglesey?
Who owns the private supply pipe?
The property owner owns the private supply pipe between the street boundary and the internal stop tap.
What happens if a private supply pipe serves several properties?
Welsh Water says it will discuss repair options when it finds that a private supply pipe is shared.
Source: Dŵr Cymru Welsh Water guidance, checked 4 November 2026.
Report a leak on Dŵr Cymru Welsh Water's side of the boundary to Dŵr Cymru Welsh Water on 0800 052 0130, 24 hours a day, 7 days a week, or online at dwrcymru.com. Leaks inside the property and on its own supply pipe are the work we do.
Dŵr Cymru Welsh Water is the sewerage company for Llangefni. Pipes serving more than one property, or serving a single property outside its boundary, are probably Welsh Water’s responsibility. Pipes serving only your property within its boundary are your responsibility.
Source: Dŵr Cymru Welsh Water guidance, checked 4 November 2026.
What should you know about county visits near Llangefni?
Which part of my Llangefni property should I describe first?
Begin with the place where you can see moisture, including its floor and nearby fittings. Add Llangefni and LL77 so the county enquiry combines a clear location with a description of the affected space.
Can Llangefni’s conservation appraisal explain every damp roof?
Its observations concern the area surveyed, including different roof shapes and slate coverings. For your building, explain any known alterations and the pattern of moisture; the appraisal does not establish the condition of an individual roof.
How do you book a county visit near Llangefni?
Send your postcode and a technical advisor calls back to arrange the visit with an engineer who covers Llangefni.
Same or next day depending upon engineer availability.
