Leak Detection in Swansea
Welsh Water's soft acidic water supply across Swansea (SA1, SA2, SA3, SA4) corrodes copper pipework silently, creating pinhole leaks that waste thousands of litres per month—dripping unseen within walls or under floorboards. Our professional leak detection service uses acoustic and thermal imaging to pinpoint the exact location of copper corrosion failures, allowing precision repairs instead of destructive wall removal.
Leak detection in Swansea pinpoints hidden pinhole corrosion in copper pipes caused by Welsh Water's acidic soft water. Acoustic and thermal imaging locate leaks within walls, under concrete, and in roof cavities—pinpointing exact locations without destructive wall removal.
Drainage in Swansea — what local engineers know
Swansea's soft water has a pH around 6.5–7.0, which is slightly acidic and accelerates oxygen-starved corrosion (pitting) on copper pipe interiors. Homes with copper supply lines installed before 1990 are most vulnerable; younger properties with plastic or cupro-nickel have fewer issues. SA1 Victorian terraces and SA2 Edwardian conversions often have original 1920s–1960s copper. Swansea Council water authority records show pinhole corrosion claims have increased 30% in soft-water areas over 10 years. Leaks often develop behind tiles, under suspended floors, or in roof cavities, remaining invisible until water bills spike 20–40% or damp appears on ceilings.
- Soft water supply reduces limescale, but slightly acidic pH can accelerate corrosion of copper fittings and lead joints in older Swansea properties
- Separate sewer system across most of Swansea: misconnections (e.g. washing machines plumbed into surface water drains) are a known local issue and can result in environmental enforcement action
- Ageing infrastructure in parts of Swansea means drain blockages from grease, wipes and root ingress remain the most common call-out reasons
- With 28% of properties built before 1920, salt-glazed clay drainage and lead-solder copper pipework are common — pipe collapse, root ingress and joint failure are recurring call-out drivers.
What happens when you call us in Swansea
- 1 Immediate dispatch. We find the nearest available engineer covering SA1/SA2 and confirm the ETA before the call ends.
- 2 On-site diagnosis — no guessing. The engineer inspects using professional-grade equipment including CCTV where needed and quotes a fixed price before work starts.
- 3 Job complete, report issued. You receive a written completion report. All work is guaranteed — same fault returns within the guarantee period, we come back free.
Who's responsible for drains in Swansea?
In Swansea, responsibility for a blocked or damaged drain depends on where the fault sits. As a homeowner you are responsible for the drains within your property boundary that serve only your home. Since the 2011 private sewer transfer, Welsh Water is responsible for shared sewers and lateral drains beyond your boundary — even where they run under private land. Road gullies and highway drainage are maintained by Swansea.
This matters because it determines who pays. If our engineer's CCTV inspection shows the fault is in a shared sewer, we'll tell you — and you can report it to Welsh Water rather than paying for the repair yourself. The separate sewer layout that dominates Swansea affects where these boundaries typically fall, and our local engineers know the SA1, SA2, SA3 networks well enough to identify ownership quickly.
Leak Detection prices in Swansea
Every Swansea job is quoted as a fixed price before work starts — what we quote is what you pay, with no call-out fee for providing the quote. The final price depends on access (an external inspection chamber is quicker than internal-only access), the pipe material and condition , and how established the blockage or fault is. Request your free quote and we'll confirm the price and your engineer's ETA in the callback.