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You are here : At Home > My Water > Water pressure

Water pressure

Please visit our customer alerts page to see if there is an incident in your area that could be affecting your water pressure.

Are you experiencing water pressure issues?

Find out what could be affecting the pressure of your water.

Low pressure

Issues and factors that could be resulting in low water pressure in your home.

Link

High Pressure

High water pressure and flow is rare but can occur in some parts of the water supply network.

High pressure

Pressure questionnaire

If you are experiencing persistent pressure issues please complete our questionnaire.

Pressure questionnaire

Who's responsible for managing water pressure?

  • Our responsibilities

    By law, we must maintain a level of water pressure in the water mains network which allows water to reach the top floor of your home. This does not apply to any floors of a property that are higher than the reservoir or water tower that supplies the property with water.

    We are legally required to supply a minimum water pressure of 7 meters head (0.7 bar) to your boundary stop tap. We use checking devices throughout our mains network to monitor this.

    There may be times when we cannot meet the 7 meters head (0.7 bar) target. Most commonly due to high water demand during hot summer months. Sometimes routine work on our water mains network or a burst water main can temporarily reduce pressure, but this should return to normal. Find out if there is any planned work being carried out in your area.

    Emergency works

    We have to carry out emergency works on occasion and this may affect the pressure to your property for up to 24 hours until the water supply has returned to normal again. Please check our emergency alerts to see if we are working in your area.

    Pressure management

    We carry out planned pressure management in areas that have high operating pressure, gradually reducing the water pressure over a period of weeks. This additional water pressure puts unnecessary stress on our network and can lead to interruptions to supplies for our customers as well as bursts, road works and traffic problems. It could also affect our customers internal pipes causing leaks and significant damage.
    By carefully controlling the water pressure in the area it helps to reduce leakage because the water pipes are under less stress. Our water regulator OFWAT expects us to reduce our company leakage and we have committed to this in our Business Plan. Over the next 5 years we are spending £4 million to better control water pressure in our region.

    Pressure management can have an effect on internal plumbing systems (such as Megaflow and combination boilers) which may need resetting to the new pressure provided. You can do this by checking the manual for your appliance or see a water industry approved plumber for advice.

    We are legally required to supply a water pressure of 7 meters head (0.7 bar) to your boundary stop tap; if you need more than this you should review what installations are suitable for your property, please note there is no upper limit for water pressure. Before installing any new systems please make sure you check with a water industry approved plumber that it will work efficiently at our minimum target water pressure of 7 meters head (0.7 bar) and a water flow of 9 litres per minute at the boundary stop tap and at your current water pressure.

  • Your responsibilities

    You are responsible for installing and maintaining the water pipes within the boundaries of your property.

    This includes water pipes inside your home as well as drainage and supply pipes outside your home, within your property boundary. You may also be responsible for pipe work that is not on your property if you share a water supply with your neighbours click here to learn more.

    Your pipes are privately owned and we do not have information about their location within your property boundary.

    You are responsible for making sure that your water pipes maintain adequate pressure once water and flow enters them.

    What should my water pressure be?

    We are legally required to supply a minimum water pressure of 7 meters head (0.7 bar) to your boundary stop tap. Pressure is measured in bars and 1 bar will push water to a height of 10 metres to your home. Water pressure is measured at the point where it leaves our pipework and flows through your outside stop tap or property boundary.

    If you are not on a joint supply, your neighbours should have the same water pressure as you, provided your houses are of very similar height and the same distance from the point where our water main is located. Your water flow is individual to your property and may differ from your neighbours.

    How can I test my water pressure?

    Please note this is only for properties that have a single supply pipe.

    Using the first tap off the supply pipe (usually the kitchen tap)

    1. Fill a 4.5 litre (1 gallon) bucket with water
    2. Make sure all other taps and appliances using water are turned off.
    3. It should take 30 seconds to fill the bucket with water - If it takes longer to fill then it’s likely you have a water pressure or flow issue.

    Find out the common causes of water pressure and flow problems to help you track down the issue.
     
    For further helpful advice, visit the Water Regulations Advisory Scheme

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