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Energy at home

Saving water at home


  • could lower your energy bills
  • could reduce carbon emissions
  • limit your impact on the local environment

Many of us may not realise that our water use at home contributes to our energy bills and our household carbon emissions.

Saving water can reduce your water bill (if you’re on a water meter), reduce your energy use and bills, reduce the impact on your local environment, and reduce carbon dioxide (CO2) emissions by using less energy to pump, heat and treat the water.

Water is intrinsically linked to energy. But most of us underestimate the energy water companies need to treat and pump water into homes. Scottish Water, for example, is the largest user of electricity in Scotland.

How do we use water?

We all need water and use it in so many ways around the home. Through cooking, washing our hands, showering and bathing, the litres soon add up. In addition to water bill and CO2 savings, by reducing our hot water use, we can also save on our energy bills.

From cleaning and gardening, washing the car to flushing the toilet, we’re using often using cold water, too. Reducing this can save on our water bills (if you have a water meter) and CO2 emissions associated with pumping fresh water and treating wastewater.

345 litres a day

Each household in the UK uses on average around 345 litres of water each day – that’s 145 litres per head, every day.

12% of your energy bill

About 12% of a typical gas heated household’s energy bill is from heating the water for showers, baths and hot water from the tap.

Heating water

Did you know that heating water for use in our homes makes up about 4% the UK’s total carbon dioxide emissions?

The hot water in your home is likely heated by one of two methods – a combi boiler or a hot water cylinder.

Combi boiler

A combi boiler provides instant hot water, meaning you don’t need a hot water cylinder. The combi boiler could run on gas, oil, LPG or electricity.

Hot water cylinder

If you have an electric or renewable heating system, or have a regular boiler instead of a combi, you’ll likely have a hot water cylinder in your home.

Quick tips to save water

No-one likes to waste water. However, many of us don’t realise that water usage contributes to energy bills.

Simple water use changes can save you money and reduce the amount of water you waste. There are also several water saving products available to make it easier for you to save.

Last updated: 23 July 2021