The water in your area

Turn on a tap in the North West and you can do so knowing we work around the clock to make sure it's clean, clear drinking water. 

If you want to know more about the water supplied in your area, just enter your postcode in the box below. It will tell you where your water comes from, as well as its chemical composition, including its pH (useful if you keep fish), and hardness (helpful if you’re plumbing in a new dishwasher). Enter your postcode in the box below and click submit. e.g. WA1 2BX.

The report details drinking water quality for the last 12 months. We update this information every week.

To check that you live in our water supply area, take a look at this map.

Check your water quality

To find out more information about the water quality in your area, enter your postcode in the box below and click submit


We have strict quality controls as we collect and treat the water and we also analyse hundreds of samples every day. We take these samples at random from water treatment works, reservoirs, supply points and our customers’ taps across the region to make sure the water is in tip-top condition. Then we record the test results on the Drinking Water Register. 

The Drinking Water Inspectorate is the regulator for water quality, providing independent reassurance that water supplies in England and Wales are safe and drinking water quality is acceptable to consumers.

Find out more about your water: