Leak Detection in Crawley
Crawley's hard water supply from Thames Water corrodes copper pipes from the inside, creating pin-hole leaks that stain ceilings weeks after perforation begins. A single pinhole in a Crawley property can waste 500 litres per day, inflating water bills by £40–£80 monthly. Our acoustic and thermal imaging leak detection pinpoints the exact location in Crawley properties without opening walls, allowing targeted repair instead of excavation.
Pin-hole corrosion from Crawley's hard water supply causes hidden leaks costing £500+ yearly in wasted water. Acoustic and thermal imaging leak detection pinpoints corrosion without excavation, allowing targeted copper isolation or softener installation across RH10–RH13 postcodes.
Drainage in Crawley — what local engineers know
Thames Water's hard water across Crawley (RH10–RH13 postcodes) carries calcium and magnesium that deposit inside copper pipes, creating weak points vulnerable to corrosion. Crawley's water hardness (280–320 mg/L) is among England's highest, making pin-hole corrosion the leading cause of hidden leaks in properties built before 1980. Lime mortar in Crawley's Victorian drainage systems also fails from hard water exposure, allowing groundwater ingress and rising damp. Crawley's mixed geology—clay and chalk—means soil pH varies by postcode, affecting corrosion rates. We carry mineral-softening descale compounds approved for Crawley's Thames Water network.
- Hard water supply causes limescale accumulation in boilers, radiators and soil pipe joints — powerflush and descaling demand is high across Crawley
- Separate sewer system across most of Crawley: misconnections (e.g. washing machines plumbed into surface water drains) are a known local issue and can result in environmental enforcement action
- High flood risk in Crawley: basement and ground-floor properties near watercourses are vulnerable to sewer backflow — non-return valve installation is strongly recommended
- With 34% 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 contact us in Crawley
- 1 Immediate dispatch. We find the nearest available engineer covering RH10/RH11 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 Crawley?
In Crawley, 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, Thames 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 Crawley.
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 Thames Water rather than paying for the repair yourself. The separate sewer layout that dominates Crawley affects where these boundaries typically fall, and our local engineers know the RH10, RH11, RH12 networks well enough to identify ownership quickly.
Leak Detection prices in Crawley
Every Crawley 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. However, 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.
In summary, Leak Detection in Crawley is backed by a 12-month workmanship guarantee. Furthermore, every job includes a written completion report. Consequently, you have full documentation if the same fault recurs.