Is Londonderry Tap Water Safe To Drink?

Yes! The tap water is safe to drink.

Tap water in Londonderry, Northern Ireland, is safe to drink. It is supplied by Northern Ireland Water and treated to meet strict UK drinking water standards.

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Water Sources
Drinking Fountains

The water is routinely tested for bacteria, chemicals, and other contaminants. Follow any temporary boiling-water notice issued by Northern Ireland Water during local supply problems.

Last checked: 2026-08-31

United Kingdom is ranked as number 1 globally with a score of 100% in the water quality EPI research conducted by Yale University.

Source of Water in Londonderry, United Kingdom

Tap water in Londonderry, Northern Ireland, is mainly supplied by Northern Ireland Water from the River Faughan catchment. The water is treated at Faughan Valley Water Treatment Works before entering the public supply network.

Treatment removes particles and microorganisms, and the water is disinfected to meet Northern Ireland drinking water standards. It is then distributed through mains pipes to homes and businesses across Londonderry and nearby areas.

Londonderry Drinking Fountains

Public drinking fountains in Londonderry are generally safe to use when they are maintained, clearly designated for drinking water, and connected to the public mains supply. Northern Ireland’s public water is regulated to meet strict UK drinking water standards.

Do not use a fountain marked out of order, visibly dirty, damaged, or subject to a local water safety notice. Let the water run briefly before drinking, particularly if the fountain has not been used recently.

Drinking Water Map

Here is a map showing all the locations of drinking water spots in Londonderry. You can click on each water drop to open the spot directly in Google Maps for directions. For easy access on the go, download our iOS app to find water fountains nearby.

Nearby Places

About the Author

Hi, I'm Emily Hartman, a researcher and water quality specialist with a background in public health.

I've spent the last few years studying how everyday water systems impact our health, and I'm passionate about making that information clear and useful for everyone.

Safe, clean tap water isn't just my job, it's something I truly care about.

Disclaimer

* The information provided on this website regarding the safety of tap water in Londonderry is sourced from reputable sources such as the World Health Organization (WHO), local water authorities, and the Environmental Performance Index (EPI) from Yale University. While we strive to ensure accuracy and reliability, it's important to note that water quality can vary over time and may be subject to factors beyond our control. Users are encouraged to verify the current water quality status with local authorities or consult additional resources before making decisions regarding water consumption. We disclaim any liability for actions taken based on the information provided on this website.