Jersey Water has achieved 100% compliance for water quality regulations.
This result is from more than 12,900 tests conducted between 1st October 2024 and 30th September 2025. The samples were taken from drinking water leaving the utility’s treatment works, its treated water storage reservoirs and at customers’ taps.
100% compliance is recognised across the water industry as a significant achievement and demonstrates Jersey Water’s ongoing efforts to ensure that Islanders can have confidence in their drinking water.
Beyond these regulatory tests, Jersey Water also carried out a further 43,783 tests on samples taken from streams and its six reservoirs, to make sure that water sent for treatment is of the best possible quality. The utility tests for more than 100 different chemicals, bacteria and pathogens, as well as more than 450 different chemicals.
Jersey Water says that in light of the levels of misinformation about water quality and consequent public concern, Jersey Water’s latest report should reassure customers that the Island’s water supply continues to meet and often exceeds stringent regulation.
Helier Smith, Chief Executive of Jersey Water commented: “Our priority is and always will be to supply water that is safe, clean and reliable. Over the past decade, we have maintained high levels of water quality, and this year was no exception, with nearly 13,000 tests confirming 100% compliance with regulatory standards. Islanders can therefore have confidence in the quality of their water supply.
“We continue to work with the Government and other agencies on a broader, Island-wide approach to managing threats to water quality, such as PFAS, nitrates and other substances. While water treatment and environmental remediation are vital, tackling pollution at its source is equally crucial. Manufacturers have a key role to play in exploring alternative substances for their products that do not pose environmental risks. At the same time, as consumers, we all need to be more conscious of what our everyday products contain, and the long-term impact they may create. Where there are opportunities to reduce or replace non-essential products that use these substances, we should be taking them, so that we protect the environment and our water resources for the long term.”
Jeanette Sheldon (pictured), Head of Water Quality, added: “The independent panel of international experts looking at PFAS across Jersey has stated that “there is no cause for concern” with the current supply of mains drinking water and that recommendations for the Government to adopt specific water quality regulations for PFAS are “precautionary”. We support steps to introduce a new limit and, in the meantime, will continue our work to trial treatment solutions so that we maintain high levels of water quality both now and into the future.”
You can read Jersey Water’s 2025 Water quality report, which includes test results, here.
