How you can look after your water

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Tap water in the UK is amongst the safest and highest quality in the world.

Water UK have produced the guide below to help you make the most of your water and answer some questions you may have. You will find a range of advice from how to clean your taps to tips for looking after water storage tanks.

Read Water UK's consumer guide

Do you need help with a plumbing job?

Whether you need assistance turning off your water, help finding a leak, or you need an emergency out of hours plumber, we can recommend a plumber who can help in your area.

Similar to schemes such as Gas Safe, we’ve pre-approved thousands of plumbers and underground workers registered under the WaterSafe scheme across our region to check they are qualified and have the knowledge required in Water Regulations.

Find a plumber

Water Fittings Regulations

The 'Water Supply (Water Fittings) Regulations 1999' are national requirements that ensure your water fixtures and fittings are designed, installed, and maintained correctly.

Click on the link below to find out more.

Water Fittings Regulations

Common questions about water in your home

There are several different kinds of home water filters and jug filters available on the market, but each type is designed to remove various compounds from tap water. 
There is no reason to use these filters on health grounds, as tap water from the mains is high quality and closely monitored. 

Water that has passed through a domestic filter should be treated as a perishable foodstuff, consumed within 24 hours, and kept in refrigerated conditions. 

The manufacturer's instructions for the filter equipment should be followed at all times. 

Visit the British Water website for advice on the installation of filters, softeners and other devices fitted to the water supply in your home.

British Water website

Seasonal changes can affect the temperature of water in our pipes which unfortunately we can do little about. However, if the temperature from your cold kitchen tap seems unusually warm it may because your cold water pipe runs very close to a hot water or central heating pipe in your home.

To resolve the issue make sure that your hot pipes are appropriately insulated where necessary. Alternatively, run your taps briefly and keep a jug or bottle of cold water in your fridge for drinking. It should be noted that water kept like this should be treated as a perishable food and be consumed within 24 hours.

During summer months, the temperature of the water in our mains may be higher as a result of hot weather and higher underground temperatures. There is no health risk associated with this higher temperature.

The drinking water we supply is closely regulated to ensure that it is wholesome, safe, and fit for human consumption.

There are some basic steps which may make the water more suitable for fish-keeping:

Time and temperature

Fish can be sensitive to extremely small amounts of metals from water that has been in contact with pipework in the home. Run your cold kitchen tap for a few minutes before collecting water the fish tank to remove any water that hasn’t moved in a while and has been in contact with pipework. 

This water can be collected and used for watering plants.

Rapid changes in water temperature can cause fish to go into shock. Allow the tap water to stand for several hours to reach room temperature before adding it to your pond or tank.


Chlorine is present in drinking water as a disinfectant, yet it is highly toxic to fish. Chlorine must be allowed to completely disappear before the water is added to the pond or tank.

It is recommended that tap water is left to stand in a clean container for at least 24 hours before use. Alternatively, water can be pre-treated using other methods to de-chlorinate water; your local aquarium supplier will be able to help with this.


Levels of nitrogen in the water can also impact upon the health of fish. Nitrogen is naturally produced in aquariums as a by-product of decomposing fish food and faeces. 

Partial water changes and aquatic plants can help to stabilise nitrogen levels. Please note, pet shop-bought nitrogen test kits can be inaccurate.

Get a free summary report of the water quality in your local area:

Check your water quality

For specialist advice on breeding and caring for fish, we suggest customers should contact a local pet shop or aquarium supplier.