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New Hampshire Water Hardness
New Hampshire doesn't publish hardness figures for its 1 city — hardness isn't a regulated parameter, so utilities rarely release it. See each page for how to check your own tap.
1 city tracked. Is New Hampshire water safe to drink? →
Cities with no published figure
These New Hampshire cities don't publish a hardness number (it isn't a regulated parameter), so they can't be ranked — but we still track them. See each page for how to check your own tap.