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- Water Quality
Guernsey Water aims to provide water that is safe and good to drink. Our treated water is monitored on a daily basis for bacteriological and chemical quality in line with the UK Drinking Water Regulations. These tests are undertaken at three different stages in the water treatment process, namely at the water treatment works, at service reservoirs and at customers' taps.
Despite our very high standards, you may notice from time to time that your tap water looks, smells or tastes different to normal. This is usually nothing to worry about. Some people are more sensitive to tastes and odours than others which means they may notice a slight change whilst others may not. Our drop-down menu below provides some explanation regarding the most commonly reported issues. However if you have a different concern, or one that persists, please contact us on tel 239500 or by emailing email@example.com so that we can try to resolve the issue for you as quickly as possible.
Testing And Sampling
Guernsey Water tests its treated water on a daily basis for bacteriological and chemical quality in line with the UK Drinking Water Regulations. These tests are undertaken at three different stages in the water treatment process:
At Water Treatment Works (St Saviours, Longue Hougue and Kings Mills)
At Service Reservoirs (Forest Road storage tanks and Water Tower, Frie Plaidy)
At customer taps (throughout the Island)
The tests cover a range of around 130 different parameters. In addition to this we monitor our raw water resources and Catchment Area very carefully to ensure that we can continue to supply water in line with the regulatory requirements. We publish these results on an annual basis, previous results can be found on our resources page here
Guernsey Water also undertakes testing and sampling for customer complaints and queries as necessary.
In 2018, the quality of the water supplied was excellent with 99.91% of 6,741 tests meeting all UK and European Union standards compared with 99.85% in 2017. You can view our latest water quality report below.