What to Do Immediately If a Pipe Bursts

A burst pipe can keep releasing water after you have dealt with the visible leak. The useful first step is to control the supply without putting yourself at risk. From there, a few careful checks can help us understand what has happened and what needs attention when we arrive.

Control the water safely

If you can reach the main water shut-off valve (stopcock) without going through water or near electrical hazards, turn it off. It is commonly found under a kitchen sink, but it may be elsewhere in the property. Turn it gently. If it will not move, do not force it: an old or stuck valve can break, leaving you with a bigger leak.

If you cannot find or safely reach the stopcock, do not search through a flooded area. Call a plumber for advice. If the water is spreading near sockets, appliances, a fuse board or other electrical equipment, keep clear. Never touch electrical switches or plugs with wet hands, while standing in water, or where the equipment itself is wet. Only switch off the relevant electrical circuit from a dry, safe position if you know which switch to use. If you are unsure, leave it alone and keep people away from the affected area.

Once the water supply is off, listen and look to see whether the flow has stopped. Water may continue to drain from pipework for a short time, so a few remaining drips do not necessarily mean the mains is still feeding the leak. If a strong flow continues, tell us when you call. Do not turn the supply back on to test it.

Reduce damage without disturbing the pipe

Move people, pets and belongings away from the affected area. If you can do so safely, place a bucket beneath a drip and use towels to stop water travelling across a floor. Avoid stepping on wet flooring or reaching behind appliances where you cannot see what is underfoot. Do not move heavy furniture through standing water.

Take clear photographs of the leak and any visible damage before moving items or starting a clean-up, provided it is safe. Make a note of where the water first appeared and when you noticed it. Water can travel along wooden supports between floors, pipes and inside walls, so the wet patch on a ceiling or wall is not always directly below the failed section. That detail can help us distinguish the visible damage from the likely source.

Do not cut into a ceiling or wall to look for the pipe. Waterlogged plasterboard can be weak, and hidden cables or pipework may be close to the surface. A bulging ceiling or sagging section needs particular caution: keep clear rather than pushing it or making a hole to release water.

Work out what you can safely observe

Without dismantling anything, note whether the leak is from an exposed pipe, a fitting, a radiator connection, or somewhere concealed. Check whether water appears to be coming from one point or spreading from above. If the leak is beside a boiler, cylinder or electrical appliance, keep clear of the equipment and do not remove covers or attempt an internal repair.

If the mains stopcock has been turned off and the leak has slowed, that is useful information. If it has not changed, mention that too. A leak can involve stored water or a separate part of a system, so the stopcock result is an observation, not proof of what has failed. Do not restart the boiler, heating or water system to investigate.

Avoid tape, sealant or improvised clamps as a substitute for isolating the supply. They can conceal the exact leak point, shift under pressure or make access harder. The priority is limiting the flow and keeping the area safe, not attempting a permanent repair yourself.

What to tell the plumber

When you call, explain where the water is showing, whether it is still flowing, what you have already isolated and whether electricity may be affected. Mention any access limits, such as a locked cupboard or water around the stopcock. You do not need to identify the failed component. A clear description of what you can see is more useful than guessing at the cause.

For more about the service and the situations it covers, see our Emergency Plumbing page. If a pipe has burst in Reading, contact NELCO PLUMBING LIMITED and tell us what is happening. We can use those first observations to understand the urgency and the next safe step.