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About your water

Quality Water  

At Northern Ireland Water, we are committed to delivering tap water of the highest quality. Our rigorous monitoring, sampling, and testing processes ensure that your water meets the most stringent standards.

Exceptional Testing and Monitoring

Every year, we conduct an impressive 470,000 tests to guarantee the purity and safety of your tap water. This translates to 791 water quality checks every single day—that's 32 checks every hour!

World-Class Tap Water

With such extensive testing, it's no surprise that Northern Ireland's tap water is among the best in the world. 🌎

Consistent Compliance

From service reservoirs to water treatment works and customers' homes, we carry out 287,924 water quality tests annually. Remarkably, 99.9% of these tests comply with drinking water regulations. Now that's impressive!

Quality You Can Trust

World-class tap water? CHECK. ✅

Engaging with the Community

Last summer, we opened up several of our sites to a host of visitors to showcase how we value our water and the role it plays in the prosperity of Northern Ireland. Visitors were given a tour of the Works and learnt about the journey of our water from source to tap. NI Water staff explained the processes used to keep Northern Ireland’s water clean and safe in an ever-changing and challenging environment.

Staff from all areas of the business—scientists, environmentalists, and water process supply technicians—were on hand to showcase the behind-the-scenes workings that go into cleaning water. Gary Presho, Water Supply Area Manager East, said, “We were delighted to be able to facilitate live demonstrations and tours hosted by our expert scientists, who test and check our water on a daily basis.

“The hands-on event was also an opportunity for the public to understand how their water is treated and safely tested before it is supplied to their taps at home, while getting involved in some key experiments with our scientific team.”


Check Your Local Water Quality

To check the water quality in your area, including hardness and dishwasher settings, visit - Water quality results - Northern Ireland Water


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