The technology will allow us to read water meters more regularly on a 'remote' basis, because readings will be transmitted to a secure central collection point. The data we gather will help us identify when and where leaks occur on the water supply pipe which connects properties to the water main in the street, and enable us to respond more quickly.

As you would expect, we will act responsibly throughout this process, and will:

• Always hold the data securely.
• Not keep the data any longer than is necessary.
• Ensure the data is not shared outside of Thames Water or our regulator, Ofwat.

We are installing the technology in two areas of Reading, two districts of Haringey and one area each in Swindon and Hackney.

Where customers already have a meter, we may want to replace it with a new one which will be suitable for use in our trial. This means the new meter will be in the same place as the old one.

We already use meters, often located in the footpath, which help us to monitor how much water is flowing through the pipework. These are not used to charge people. We need to fit more of these meters over the next few months to further improve the information we collect.

Although using a meter is our preferred method of charging for water usage, these additional meters are not being installed for charging purposes. However, we do find that many customers benefit from being charged using a meter.

• Find out more about switching to a meter