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Northern Ireland Water Drinking Water Quality Public Registers, Individual Customer Tap & Authorised Supply Point Results, & Drinking Water Quality Annual Reports

Publisher
OpenDataNI
Updated
23 July 2026
Topic
Not set
Licence
UK Open Government Licence (OGL)

Summary

Summary Public Register results by Water Supply Zone, anonymised individual results for Customer Tap samples collected within Water Supply Zones and Authorised Supply Points, and Drinking Water Quality Annual Reports.

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Data links

Link Format Preview Updated
2025 NI Water Customer Tap Public Register (663 KB) PDF – 20/7/2026
Postcode v Zone Lookup by Year (8 MB) CSV Preview 20/7/2026
2025 NI Water Customer Tap & Authorised Supply Point Results (10 MB) CSV Preview 20/7/2026
2025 NI Water - Understanding your Water Quality Results (163 KB) PDF – 20/7/2026
2025 Water Hardness by Water Supply Zone (387 KB) PDF – 20/7/2026
2025 NI Water Drinking Water Quality Annual Report.pdf (2 MB) PDF – 20/7/2026
2024 NI Water Drinking Water Quality Annual Report.pdf (2 MB) PDF – 20/7/2026
2024 NI Water Customer Tap & Authorised Supply Point Results (9 MB) CSV Preview 4/7/2025
2024 NI Water Customer Tap Public Register (14 MB) PDF – 20/7/2026
2024 Water Hardness by Water Supply Zone (103 KB) PDF – 10/2/2025
2023 Water Hardness by Water Supply Zone PDF – 2/10/2024
2023 NI Water Drinking Water Quality Annual Report PDF – 27/6/2024
2023 NI Water Customer Tap & Authorised Supply Point Results (9 MB) CSV Preview 4/7/2025
2023 NI Water Customer Tap Public Register (622 KB) PDF – 20/7/2026
2022 NI Water Customer Tap Public Register PDF – 8/8/2023
2022 NI Water Customer Tap & Authorised Supply Point Results (9 MB) CSV Preview 4/7/2025
2022 NI Water Drinking Water Quality Annual Report PDF – 8/8/2023
2023 Water Hardness for Northern Ireland Map JPEG – 3/6/2024
2002 NI Water Drinking Water Quality Report PDF – 3/11/2022
2003 NI Water Drinking Water Quality Report PDF – 3/11/2022
2004 NI Water Drinking Water Quality Report PDF – 3/11/2022
2005 NI Water Drinking Water Quality Report PDF – 3/11/2022
2006 NI Water Drinking Water Quality Report PDF – 3/11/2022
2007 NI Water Drinking Water Quality Report PDF – 3/11/2022
2008 NI Water Drinking Water Quality Report PDF – 3/11/2022
2009 NI Water Drinking Water Quality Report PDF – 3/11/2022
2010 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2011 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2012 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2013 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2014 NI Water Drinking Water Quality Annual Report4 PDF – 3/11/2022
2015 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2016 NI Water Drinking Water Quality Annual Report16 PDF – 3/11/2022
2017 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2018 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2019 NI Water Drinking Water Quality Annual Report19 PDF – 3/11/2022
2020 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2021 NI Water Drinking Water Quality Annual Report PDF – 3/11/2022
2021 NI Water Customer Tap & Authorised Supply Point Results (8 MB) CSV Preview 4/7/2025
2021 NI Water Customer Tap Public Register PDF – 19/1/2022
2020 NI Water Customer Tap Public Register PDF – 4/2/2021
2020 NI Water Customer Tap & Authorised Supply Point Results (7 MB) CSV Preview 10/2/2025
2019 NI Water Customer Tap & Authorised Supply Point Results (9 MB) CSV Preview 10/2/2025
2019 NI Water Customer Tap Public Register PDF – 13/2/2020
2018 NI Water Customer Tap & Authorised Supply Point Results (8 MB) CSV Preview 10/2/2025
2018 NI Water Customer Tap Public Register PDF – 20/2/2019
2002 NI Water Customer Tap Public Register PDF – 31/1/2018
2002 NI Water Customer Tap Results (2 MB) CSV Preview 10/2/2025
2003 NI Water Customer Tap Public Register PDF – 31/1/2018
2003 NI Water Customer Tap Results (2 MB) CSV Preview 10/2/2025
2004 NI Water Customer Tap Public Register PDF – 31/1/2018
2004 NI Water Customer Tap & Authorised Supply Point Results (5 MB) CSV Preview 10/2/2025
2005 NI Water Customer Tap Public Register PDF – 31/1/2018
2005 NI Water Customer Tap & Authorised Supply Point Results (5 MB) CSV Preview 10/2/2025
2006 NI Water Customer Tap Public Register PDF – 31/1/2018
2006 NI Water Customer Tap & Authorised Supply Point Results (6 MB) CSV Preview 10/2/2025
2007 NI Water Customer Tap Public Register PDF – 31/1/2018
2007 NI Water Customer Tap & Authorised Supply Point Results (6 MB) CSV Preview 10/2/2025
2008 NI Water Customer Tap Public Register PDF – 31/1/2018
2008 NI Water Customer Tap & Authorised Supply Point Results (6 MB) CSV Preview 10/2/2025
2009 NI Water Customer Tap Public Register PDF – 31/1/2018
2009 NI Water Customer Tap & Authorised Supply Point Results (8 MB) CSV Preview 10/2/2025
2010 NI Water Customer Tap Public Register PDF – 31/1/2018
2010 NI Water Customer Tap & Authorised Supply Point Results (7 MB) CSV Preview 10/2/2025
2013 NI Water Customer Tap Public Register PDF – 30/1/2018
2012 NI Water Customer Tap Public Register PDF – 30/1/2018
2011 NI Water - Customer Tap Public Register PDF – 30/1/2018
2017 NI Water Customer Tap & Authorised Supply Point Results (8 MB) CSV Preview 10/2/2025
2017 NI Water Customer Tap Public Register PDF – 29/1/2018
2011 NI Water Customer Tap & Authorised Supply Point Results (7 MB) CSV Preview 10/2/2025
2012 NI Water Customer Tap & Authorised Supply Point Results (7 MB) CSV Preview 10/2/2025
2013 NI Water Customer Tap & Authorised Supply Point Results (8 MB) CSV Preview 10/2/2025
2016 NI Water Customer Tap Public Register PDF – 2/8/2017
2015 NI Water - Customer Tap Public Register PDF – 2/8/2017
2014 NI Water - Customer Tap Public Register PDF – 2/8/2017
2016 NI Water Customer Tap & Authorised Supply Point Results (8 MB) CSV Preview 10/2/2025
2015 NI Water Customer Tap & Authorised Supply Point Results (7 MB) CSV Preview 10/2/2025
2014 NI Water Customer Tap & Authorised Supply Point Results (8 MB) CSV Preview 10/2/2025

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