Leak detection near Blackwood in Caerphilly
Leak detection near Blackwood finds hidden water leaks affecting homes and premises along the Sirhowy River. ADI Leak Detection Caerphilly arranges visits across the county through head office. Blackwood 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 Blackwood area of Caerphilly?
Chartist Bridge and Blackwood Miners’ Institute help identify the town within Caerphilly County Borough. Pair Blackwood with NP12 when enquiring, then explain the affected part of the building and its present use.
In the Blackwood Census 2021 built-up area, semi-detached accommodation accounts for 47% and terraces for 24.5%. Flats add a further 7.6%. Explain any conversion, extension or division into separate units when booking, since those alterations can change the access needed to inspect the relevant plumbing.
For Blackwood premises with several water fittings, identify which taps or appliances were being used when the problem appeared. Note any room where the evidence is visible and any separate part of the building that cannot yet be entered. The booking description should follow the current internal layout.
Which places around Blackwood are in this county guide?
This county guide describes the places and landscape around Blackwood.
- Blackwood NP12
Local landmarks and terrain
- Chartist Bridge
- Blackwood Miners’ Institute
Who handles supply-pipe leaks around Blackwood in Caerphilly?
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 Blackwood. 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 Blackwood?
How should a Blackwood High Street enquiry be described?
State whether the affected space is a shop, another business use or accommodation within the building. Explain which entrance serves it and whether the water controls sit in an area managed by someone else.
Does the Sirhowy River establish the source of indoor moisture?
The river describes Blackwood’s geographical setting. A wet patch inside a building still needs its own evidence, including when it appears, what fittings are nearby and whether the pattern changes with their use.
How do you book a county visit near Blackwood?
Send your postcode and a technical advisor calls back to arrange the visit with an engineer who covers Blackwood.
Same or next day depending upon engineer availability.
