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Reasons for low water pressure

We know how frustrating it can be when your water's not coming out right. No one wants to wait half an hour to fill a bath, and no one wants to take a shower under a disappointing drizzle. So we've put together a few of the most common causes of low water pressure in your home to help you find the source of the problem.

1. There could be low water pressure in the mains

When lots of homes in your local area are all drawing water at the same time, the supply might not be able to keep up with the demand. That means you're getting less water delivered to your home than usual, and you'll notice that your own water pressure is low.

2. Your water supply pipe might be deformed

Pipes made of lead or plastic are relatively soft. And if they get squashed or out of shape, the water won't be able to flow through them as freely as it should.

3. Your pipes might be corroded

If you have galvanised steel supply pipes, there could be a build-up of corrosion inside. This build-up leaves less room in the pipe for water to flow, leading to low water pressure from your taps and fixtures.

4. Your supply pipe might be leaking

When pipes freeze over the winter, or when they suffer from damage or corrosion, they're more likely to spring a leak. And if there's water escaping, that's less water making its way to your taps. If you think your pipes have started to leak, you've got more to worry about than just your water pressure being low. Escaping water could be damaging your property, so you'll need to get it fixed straight away. Have a look at our guides to fixing a leaking sink to help you get started.

5. Your stopcock could be damaged

The stopcock is the shut-off valve that cuts your home off from the water supply. If it's damaged, or if it hasn't been opened fully after it was last closed, it could be restricting the flow of water into your home. You can find out how to locate the stopcock for your home by reading our guide to turning off your water supply.

6. You might have just had a combi-boiler installed

Combination boilers work by heating water as they receive it from the water supply. To make sure that the water running through the boiler gets hot enough before it reaches you, the boiler might have to restrict the flow – which could mean that you notice lower water pressure when using the hot taps.

7. The layout of your pipes might be causing problems

If your plumbing hasn't been laid out in an efficient way, your water pressure might be suffering. A tangled network of pipes with too many bends and restrictions can make it harder for the water to flow freely – and if the water needs to be pushed up through a lot of vertical height before it reaches you, you'll find it coming out at a much lower pressure.
More plumbing Help and Advice.

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