TOP 10 HARDEST WATER SUPPLIES - NORTHERN IRELAND
The ten water supply zones in Northern Ireland with the hardest water, ranked from NI Water data. The water hardness data in this chart has been verified by Aquatell directly from primary sources.
| Rank | City / Town / Village(water supply zone) | County | mg/l | gpg | °Clark | °dH | °fH | Source |
|---|---|---|---|---|---|---|---|---|
| 1 | 1. Moneymore, CoaghMoneymore | Co. Londonderry / Co. Tyrone | 167 | 9.8 | 11.7 | 9.4 | 16.7 | Source |
| 2 | 2. Glenavy, StoneyfordCastor Bay Stoneyford | Co. Antrim | 164 | 9.6 | 11.5 | 9.2 | 16.4 | Source |
| 3 | 3. Jonesborough, MeighCastor Bay Newry West | Co. Armagh | 164 | 9.6 | 11.5 | 9.2 | 16.4 | Source |
| 4 | 4. Dungannon, Cookstown, CoalislandCastor Bay Dungannon | Co. Tyrone | 163 | 9.5 | 11.4 | 9.1 | 16.3 | Source |
| 5 | 5. Portadown, RichhillCastor Bay Portadown | Co. Armagh | 163 | 9.5 | 11.4 | 9.1 | 16.3 | Source |
| 6 | 6. Lurgan, WaringstownCastor Bay Craigavon East | Co. Armagh / Co. Down | 162 | 9.5 | 11.3 | 9.1 | 16.2 | Source |
| 7 | 7. Banbridge, Tandragee, BessbrookCastor Bay Tandragee | Co. Armagh / Co. Down | 161 | 9.4 | 11.2 | 9 | 16.1 | Source |
| 8 | 8. Moira, MagheralinCastor Bay Moira | Co. Down | 160 | 9.3 | 11.2 | 9 | 16 | Source |
| 9 | 9. Dunmurry, Poleglass, TwinbrookPoleglass Dunmurry | Co. Antrim | 159 | 9.3 | 11.2 | 8.9 | 15.9 | Source |
| 10 | 10. Antrim, Ballyclare, CrumlinDunore Point Antrim, Dunore Point Hydepark and Dunore Point Crumlin | Co. Antrim | 158 | 9.2 | 11.1 | 8.9 | 15.8 | Source |
Showing the 10 hardest water supply zones in Northern Ireland. Find every town on the full Northern Ireland chart.