Dwr Cymru Welsh Water
My Water Prepare your home for winter

During the cold weather, customers often have trouble with frozen pipes. A drop in temperature can cause water in pipes to freeze, triggering a burst when it thaws. A repair is then urgently needed, bringing you expense and inconvenience at a time of year when you’d least want to face it.


To help you to have a stress-free winter, here are some top tips on protecting your home or business over the colder months and how to deal with frozen pipes.

Protecting your home:

  1. To isolate your water supply turn your stop tap clock wise , we would recommend that you test the internal stop tap works before winter hits
  2. Make sure any exposed pipes and taps are wrapped or lagged and insulate water tanks. Get your free lagging kit here
  3. If you have tanks or pipes in the roof space, open the loft hatch to allow warm air to circulate
  4. Fix dripping taps – a gentle trickle of water can freeze and completely block the waste pipe
  5. Keep your heating on low if leaving your home empty over the winter and get a friend or neighbour to check the property regularly
  6. If you own a property or business which will be unoccupied during the holiday period, we would recommend you isolate the internal stop tap or leave the heating on low while you are away

Cold weather and how to deal with frozen pipes

If you have no water or low water pressure it could be because your water pipes are frozen.
You may want to check with your neighbour to see if they have the same problem. If they have water, it could be that your pipes are frozen.

How to deal with frozen pipes:

  1. Find your internal stop tap and turn it off.
  2. Drain the cold water system only by flushing the toilet and opening cold taps over sinks and baths
  3. If you don’t find any damage, turn on all the taps and slowly thaw the frozen pipe with hot water bottles or a towel soaked in hot water, starting at the end of the pipe. Never use a naked flame or blowtorch to thaw a pipe.
  4. If you are unsure of anything at any time, call a registered plumber.

Problems with your water supply

If you have checked the pipes on your property and they are not burst or frozen, and you still have no water supply, let us know.
We’re open 24 hours a day, call 0800 052 0130. To find out if there are any existing problems in your area, click here.

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