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Leak Detection in Letchworth Garden City
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Letchworth Garden City is our home town, and leaks and burst pipes are part of our work here all year round. Many leaks start somewhere you can't see, often on the supply pipe that brings water into the house. The quickest way to prove whether there's a leak, and whether it's on your side, is a pressure test, and that's where we start.
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Open 7am to 9pm Monday to Friday, 7am to 7pm Saturday and Sunday.
£5M public liability
6 vans on the road
on every enquiry
All work guaranteed and documented.
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What a pressure test tells you
We isolate a section of pipework, bring it up to pressure and watch a gauge. If the pressure holds, that section is sound. If it drops, there's a leak in it. Testing one section at a time narrows the search, so we can tell whether the problem is on the supply pipe outside, on the pipework inside, or on a particular branch, before anything is dug up or opened. It also shows whether the leak is on your side of the boundary or the water company's.
Older homes and old supply pipes
Letchworth's oldest homes date from the early 1900s, and many of the town's houses were built before 1970. Affinity Water's guidance is that homes built before then may still have lead pipework, and the pipe from your boundary to the house is the homeowner's to look after. Old lead or iron pipes can corrode and fail at the joints. If a leak turns up on one, replacing the run is often better value than repeated repairs, and it brings the pipe up to today's standards. As a WRAS approved firm, our work on supply pipes follows the Water Fittings Regulations.
Leaks inside the house
Inside, leaks hide under kitchens and bathrooms, behind boxing in, and under floors where pipes run between rooms. A small weep from a joint can soak a floor for weeks before it shows. Once we've found it, we repair the pipe and tell you how much needs making good. If a pipe has split and water is escaping fast, that's an emergency.
Emergency Plumber in Letchworth Garden City Burst Pipe Repairs
Spotting a hidden leak early in Letchworth
A slow leak rarely announces itself. Water can soak into plaster, floor timbers or the ceiling below for weeks before a stain appears, and by then the water damage is often bigger than the leak itself. The early signs are easy to miss: the shower or kitchen tap losing pressure for no clear reason, a water bill that jumps, the sound of water running when every tap is off, or a patch of wall that feels cold and damp. If you notice one of these, call us before it spreads. Once we've found the leak, the repair is agreed with you before any work begins, and it's guaranteed for 12 months.
“Fitted a new stopcock and gave me valuable tips for a smaller DIY job. Would recommend.”
When you can reach us in Letchworth
We're open 7am to 9pm Monday to Friday and 7am to 7pm on Saturday and Sunday. Call 01462 510001 or send a WhatsApp to 07719 056800, and we reply to enquiries within 2 hours. Every repair is guaranteed for 12 months.
Leak detection questions from Letchworth
What is a pressure test and do I need one?
Should I replace an old lead supply pipe?
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Do you work on commercial premises in Letchworth?
How can I tell if there's a leak under the floorboards?
Updated October 2026
JLP Plumbing, Business Centre West, Letchworth Garden City, Hertfordshire, SG6 2HB · 01462 510001