Water quality

At Jersey Water, we aim to provide water which consistently meets all of the quality requirements laid down in law and regulation.

The laws and regulations that are in place to regulate the quality of the water that we supply are extensive and meet European Union Directives on water quality.

The Water (Jersey) Law 1972 includes physical, chemical and bacteriological parameters and limits for water to be deemed wholesome.

In order for the Company to meet the necessary legal and regulatory standards on water quality it has in place strict policies and procedures to control the treatment process to ensure that the water supplied is of the highest standard.

The quality of drinking water in Jersey is continually monitored. Our laboratory carries out tests on approximately 7,000 samples taken throughout the year from water sourcestreatment worksstorage reservoirs and customers’ taps.

The tests are conducted at our water quality laboratory at Millbrook, in St Lawrence where the laboratory staff carry out physical, chemical and bacteriological analysis on the samples.

We are required by law to supply water that meets clear parameters for “wholesomeness”. Read more…

We continually test both our untreated and treated water to make sure it’s consistently top-quality. Read more…

Every year, we publish our water quality report, including our test results. Read more…

The water that we supply goes through many stages of filtration and treatment before it reaches your tap. Read more…

Learn about the work we do as part of the Action for Cleaner Water Group. Our joint aim is to protect the quality of our Island’s water. Read more…

This map shows the current levels of nitrates in the streams that feed our reservoirs. Read more…

Submit review

(Rating 1-5, with 1 being lowest and 5 being highest)

If you would like us to contact you, please leave your details in the fields below. A member of our customer services team will respond to you as quickly as possibly.