Low Water Pressure Plumber in London

A sudden drop is often a burst main or works in the street, so check whether neighbours are affected first. If it is only your home, look for a leak, a half-closed stopcock or a blocked filter. If pressure dropped slowly over months, ageing or narrow supply pipework is a more likely cause.

Thames Water looks after the main and the pipe up to your boundary, and the owner looks after the supply pipe and everything inside. Our readings at the stopcock and at your taps show which side the problem is on, which helps if you need to contact them.

Flats often share a supply pipe or rely on a tank and pump, and upper floors get less pressure from the mains. A half-open valve, a failing pump or a shared pipe that is too narrow are common causes. We check your flat first and tell you if it is a building-wide issue.

Check whether neighbours have water too. If they do not, it is likely a supply problem in the street, and your water company is the contact. If only you are affected, make sure the stopcock is fully open, look for any leaks and call us.

If cold is fine but hot is weak, the restriction is usually after the point where the hot water is stored or heated, such as a tank, a partly closed valve or a blocked fitting. We trace the hot supply and recommend the repair that will actually make a difference.

Sometimes, but not always. A pump can improve flow where the system is the limit, but it cannot create water that the supply pipe is not delivering. We measure first, then tell you honestly whether a pump, a pipe upgrade or a simpler repair is the right answer.

Yes. A stopcock that will not turn or drips is worth replacing, because it is your main way to stop water in an emergency. We isolate the supply, fit a new stopcock and check it shuts off fully, so you know it will work when you need it.