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NH tap water quality, city by city
180 cities and towns in NH are served by an active community water system in the EPA's records. Each page below translates that system's EPA-reported history into plain English.
According to EPA SDWIS data, retrieved June 2026.
- Allenstown
- Alstead
- Alton
- Amherst
- Andover
- Antrim
- Ashland
- Atkinson
- Atkinston
- Barrington
- Bartlett
- Bath
- Bedford
- Belmont
- Bennington
- Berlin
- Bethlehem
- Bow
- Brentwood
- Bristol
- Campton
- Canaan
- Candia
- Center Conway
- Center Harbor
- Center Ossipee
- Center Tuftonboro
- Charlestown
- Chester
- Chocorua
- Claremont
- Colebrook
- Columbia
- Concord
- Contoocook
- Conway
- Danville
- Deerfield
- Deering
- Derry
- Dover
- Durham
- E Kingston
- E Wakefield
- East Andover
- East Hampstead
- Enfield
- Epping
- Epsom
- Errol
- Exeter
- Farmington
- Fitzwilliam
- Francestown
- Franconia
- Franklin
- Freedom
- Fremont
- Gilford
- Glen
- Glencliff
- Goffstown
- Gorham
- Grantham
- Greenfield
- Greenville
- Groveton
- Hales Location
- Hampton
- Hancock
- Hanover
- Haverhill
- Hebron
- Henniker
- Hill
- Hillsboro
- Hillsborough
- Hinsdale
- Holderness
- Hollis
- Hooksett
- Hopkinton
- Hudson
- Intervale
- Jackson
- Jaffrey
- Keene
- Kingston
- Laconia
- Lancaster
- Las Vegas
- Lebanon
- Lee
- Lincoln
- Lisbon
- Littleton
- Londonderry
- Loudon
- Lowell
- Lyme
- Madbury
- Madison
- Manchester
- Marlborough
- Meredith
- Meriden
- Merrimack
- Milan
- Milford
- Milton
- Mirror Lake
- Monroe
- Moultonboro
- Moultonborough
- N Conway
- N Stratford
- N Swanzey
- N Walpole
- N Woodstock
- Nashua
- New Durham
- New Hampton
- New Ipswich
- New London
- Newbury
- Newmarket
- Newport
- Newton
- North Conway
- North Haverhill
- North Woodstock
- Northfield
- Northwood
- Orford
- Ossipee
- Pelham
- Pembroke
- Peterborough
- Pittsburg
- Plaistow
- Plymouth
- Portsmouth
- Raymond
- Rindge
- Rochester
- Rollinsford
- Rye
- Salem
- Sanbornton
- Sanbornville
- Sandown
- Seabrook
- Somersworth
- Stratham
- Sunapee
- Suncook
- Surry
- Swanzey
- Tamworth
- Thornton
- Tilton
- Troy
- Twin Mountain
- Unity
- Walpole
- Warner
- Warren
- Waterville Valley
- Weare
- West Stewartstown
- West Swanzey
- Westmoreland
- Whitefield
- Wilmot
- Wilton
- Winchester
- Windham
- Windsor
- Wolfeboro
- Woodsville