Did you know?

Over 45 million cubic meters of water is lost across the world the in the form of leakages.

Closer home, water leakages in many UK homes and commercial properties have been on the rise. P

Poor workmanship coupled with substandard equipment have conspired to cause unending suffering to many home owners.

Water Leak Detection EquipmentNot every leak can be fixed by a plumber, there are times an expert is needed to, for instance, help detect a hidden leak. When that central heating system stops working because of a leak, when that swimming pool is leaking, when that wall starts becoming discoloured due to an internal leak; it’s important you seek quick professional help.

Who do you call? Where do you start?

This detailed guide is for all UK home owners and landlords and property managers. But first, we’ll start with the basics.

Causes of water leaks

Seals are normally put around water connectors by contractors. With time these appliances age and the seals are likely to wear out or break. To detect a broken seal, you check out for condensation on puddles that are near these appliances.

A blocked pipe can cause a lot of inconvenience, and if not attended to they can lead to an overflow or even a burst.

Leak spraying out of leaking joint

Corrosion happens with time as the plumbing system ages. This is likely to cause rust that eats away the piping system. Warping and discoloured pipes are some of the signs of corrosion and can only be solved by replacing the pipes before they begin to leak.

The weakest point of a pipe is where there is a joint. These joints tend to experience the most pressure and with time are likely to wear out and cause water leakage. The best way to detect deteriorating joints is hearing banging or ticking noise when water is turned on, at that point a plumber may be needed to evaluate the extend of damage.

Water pressure should be even otherwise most taps and pipes cannot withstand uneven high water pressure leading to leaks.

Tree roots outside your home where water pipes pass through can damage water pipes causing them to leak. You can detect such problem by noticing wet patches in your yard or sink holes or sudden water pressure drop.

These may occur due to pressure or strong movement on taps and pipes. For example, a washing machine shaking during washing may cause the pipes and other connectors to become loose with time causing water leakage.

Extreme weather changes may cause pipes to either contract or expand. These contractions can cause the pipes to crack, leading to water leaks.

Signs of Water Leaks In A Building

When there is a leak, and the excess water moisture is absorbed by building materials like drywall, wood, or sheetrock, they produce a musty smell. This is because the affected building is likely to develop mould growth that automatically generates the pungent odour.

Mould growth is as a result of excessive water moisture in an area. When mould growth appears on ceiling, walls and the area is not prone to frequent water moisture like kitchen and washroom areas; then there is a likelihood of water leakage behind the area.

Water leaks behind walls are absorbed by the drywall and can cause noticeable stains on walls which keep growing with time as the leakage continuous. This indicates there is a leakage behind the walls.

Damp Damaged Building From Possible Water LeakLeakage on walls will cause the wall painting to start peeling and wallpaper to separate itself from the wall. A clear indication that the wall is soaking moisture from a possible leak.

Sheetrock affected by leaking water is likely to bend and curve, causing the wall to warp. If not attended to, it can lead to excessive structural damage of the wall.

Affected Sheetrock by excess moisture can spread to connected ceilings and floors. The affected floor and ceiling shows signs of buckling and stains.

Cracks on the house foundation and walls may be as a result of leaking water which if unattended can weaken the house foundation.

Bubbling and whistling noises from areas where water pipes pass through in the home may be signs of broken pipes. A plumber should be called to assess the root cause of the noise.

Common Household Leaks & How To Detect Them

Washing Machine leaks are common mostly because of their regular usage. Most of the leaks are located at the hose supply of hot or cold water due to rupture.

To detect frequently inspect the hoses for any sign of cracking or abrasion. Also, keep checking for any wet spots on walls or any mold forming around the area.

Water heaters begin to leak due to rust and corrode build up. This is mostly after a long time use, and it starts slowly without being noticed.

Frequent maintenance may delay the build-up of rust and corrode in water heaters.

Most toilet leaks happen in the water supply tank, especially at the wax ring and flange. When this happens, the moist goes to the drywall causing wet spot and mold formation.

Constant check behind toilets and on the walls bordering the toilet for any signs of mildew or mold may help detect any water leakage.

Sewer blockages are likely to happen during heavy rainy seasons refluxing raw sewage back to the basement. Annual maintenance may alleviate this problem.

Frequently examine the pipes that connect the valve for any moisture or leakage.

Dishwashers are likely to leak unnoticed for a long time hence damaging the floor, on the other hand, refrigerators with automatic water dispensers are also culprits of leakage and rupture.

Frequently check on walls and floors near the freezer and dishwasher for any signs of damage caused by water.

These areas are difficult to detect for any leakage because of the tiles covering the walls and floors.

Low water pressure or lifting tiles may be a sign of water leakage.

High Water pressure can cause stress on water pipes, fixtures, and appliances. This may result in pinhole ruptures that may cause leakage and with time will become significant ruptures resulting in flooding your home.

Recommended water pressure should be maintained at all times.

Proactive Steps To Prevent Water Leaks

Check Your Water Meter

You may wish to carry out a simple water meter leak detection test to see if you have a water leak on your own pipework beyond the boundary (usually at the main road / entrance to your property from the public highway)

How Can We At ADI Leak Detection Help?

Here at ADI we are the UK’s Original Water Leak Detection Company, Specialising in finding all hidden water leaks using specialist technologies to pinpoint the exact location of your leak.

Water Leak Detection Services UK - Leak Detection London

 If you suspect that there’s a water leak in your home or workplace then call ADI on 0800 731 3843.

Reporting Water Mains Leaks Outside Of Your Property Boundary

You simply contact the one closest to you;

Yorkshire Water

Yorkshire Water Services Ltd
Head Office Address:
Western House
Western Way
Bradford BD6 2LZ
Phone: +44(0)1274 691 111
Fax: +44(0)1274 604 764


United Utilities

United Utilities Water plc
Head Office Address:
Haweswater House
Lingley Mere Business Park
Lingley Green Avenue
Great Sankey
Warrington WA5 3LP
Phone: See http://www.unitedutilities.com/contacts.aspx for phone numbers
Fax: +44(0)1925 237 073

Sutton & East Surrey

Sutton & East Surrey Water plc
Head Office Address:
London Road
Surrey RH1 1LJ
Phone: +44(0)1737 772 000

Severn Trent Water

Severn Trent Water Ltd
Severn Trent Water
Severn Trent Centre
2 St Johns Street
Phone: +44(0)24 7771 5000


Portsmouth Water plc
Head Office Address:
PO Box 8
West Street
Hants PO9 1LG
Phone: +44(0)23 9249 9888
Fax: +44(0)23 9245 3632


DwrCymruCyfyngedig (Welsh Water)
Head Office Address:
Pentwyn Road
Mid Glamorgan CF46 6LY
Phone: +44(0)1443 452 300
Fax: +44(0)1443 452 323

Bristol Water

Bristol Water plc
Head Office Address:
PO Box 218
Bridgwater Road
Bristol BS99 7AU
Phone: +44(0)117 966 5881
Fax: +44(0)117 963 4576

Anglian Water (including Hartlepool)

Anglian Water Services Ltd
Head Office Address:
Lancaster House
Lancaster Way
Ermine Business Park
PE29 6YJ
Phone: +44 (0)1480 323 000
Fax: +44 (0)1480 323 115

Dee Valley

Dee Valley Water plc
Head Office Address:
Wrexham Road
North Wales LL14 4EH
Phone: +44(0)1978 846 946
Fax: +44(0)1978 846 888

Northumbrian Water (including Essex & Suffolk)

Northumbrian Water Ltd
Head Office Address:
Abbey Road
Pity Me
Durham DH1 5FJ
Phone: +44(0)8706 084820
Fax: +44(0)191 384 1920

Sembcorp Bournemouth Water

Sembcorp Bournemouth Water Ltd (formerly Bournemouth & West Hampshire Water plc)
Head Office Address:
George Jessel House
Francis Avenue
Bournemouth BH11 8NX
Phone: +44(0)1202 591 111
Fax: +44(0)1202 597 022

South East Water

South East Water Ltd
Head Office Address:
Rocfort Road
Phone: +44(0)333 000 0001
Fax: +44 (0) 1634 242 764

Southern Water

Southern Water Services Ltd
Head Office Address:
Southern House
Yeoman Road
Sussex BN13 3NX
Phone: +44(0)1903 264 444
Fax: +44(0)1903 262 185

South Staffs Water

South Staffordshire Water plc
Head Office Address:
Green Lane
West Midlands WS2 7PD
Phone: +44(0)1922 638 282
Fax: +44(0)1922 723 631


90 Fulbourn Road
Cambridge, CB1 9JN
Phone: +44(0) 1223 706050
Fax: +44(0)1223 214 052

South West Water

South West Water Ltd
Head Office Address:
Peninsula House
Rydon Lane
Exeter EX2 7HR
Phone: +44(0)1392 446 688
Fax: +44(0)1392 434 966

Thames Water

Thames Water Utilities Ltd
Head Office Address:
Clearwater Court
Vastern Road
Reading RG1 8DB
Phone: 0800 980 8800
Fax: +44(0)1793 424 291

Wessex Water

Wessex Water Services Ltd
Head Office Address:
Claverton Down Road
Claverton Down
Bath BA2 7WW
Phone: +44(0)1225 526 000
Fax: +44(0)1225 528 000

Affinity Water

(formerly Three Valleys, Tendring Hundred, Folkestone& Dover, Veolia Central, Veolia East, Veolia Southeast)

Head Office
Tamblin Way
Hertfordshire AL10 9EZ
Phone: +44(0)1707 268 111
Fax: +44(0)1707 277 333

Affinity Water (East region)
Mill Hill
Essex CO11 2AZ
General and Billing Enquiries 0845 1489288
Payment Helpline 0845 1482911
Emergency?? 0845 1489299
Fax: +44(0)1206 399 210

Affinity Water (Southeast region)
Head Office Address:
Cherry Garden Lane
Kent CT19 4QB
Phone: +44(0)1303 298 800
Fax: +44(0)1303 276 712

Veolia Water Projects

Veolia Water Projects
Kings Place
90 York Way
Fifth Floor
N1 9AG
General enquiries: 0207 843 8500
Fax: 0207 843 8560

Leep Water Networks Limited

Leep Water Networks Limited
The Greenhouse
101-110 Broadway
M50 2EQ
Phone: 0345 122 6786

SSE Water

SSE Water Ltd
Head Office Address:
55 Vastern Road
Reading RG1 8BU
Phone: +44 (0)118 958 0100
Fax: +44 (0)118 953 4028

Independent Water Networks

Independent Water Networks Ltd
Head Office Address:
Driscoll 2
Ellen Street
Cardiff, CF10 4BP
Phone: 02920 028 711

Albion Water

Albion Water Ltd
Head Office Address:
Harpenden Hall
Southdown Road
Phone: +44(0)1582 767720