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Bridge Safety 624,000 bridge inspections Aviation Safety 30,000+ NTSB aviation events Dam Safety 92,600 dam safety records Water Safety 433,000+ public water systems Railroad Safety 438,000+ rail crossings Pipeline Safety 8,800+ pipeline incidents
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Browse Water Systems

3,946 public water systems in NH.

Public Water Systems Database

Browse 3,946 EPA-regulated public water systems with identifiers, population served, and water source type. Use the filters below to narrow results by state, system type, or name.

Clear
System Name PWSID State Type Population Served
MANCHESTER WATER WORKS NH1471010 New Hampshire Community 123,500
PENNICHUCK WATER WORKS NH1621010 New Hampshire Community 89,073
CONCORD WATER DEPT NH0501010 New Hampshire Community 44,215
PORTSMOUTH WATER WORKS NH1951010 New Hampshire Community 33,000
KEENE WATER DEPT NH1241010 New Hampshire Community 30,000
DOVER WATER DEPT NH0651010 New Hampshire Community 29,000
MERRIMACK VILLAGE DIST NH1531010 New Hampshire Community 25,500
ROCHESTER WATER DEPT NH2001010 New Hampshire Community 25,000
LACONIA WATER WORKS NH1281010 New Hampshire Community 21,000
SALEM WATER DEPT NH2051010 New Hampshire Community 21,000
DERRY WATER DEPT NH0611010 New Hampshire Community 17,210
HUDSON WATER DEPT NH1201010 New Hampshire Community 16,700
UNH/DURHAM WATER SYS NH0691010 New Hampshire Community 16,000
SEABROOK WATER DEPT NH2111010 New Hampshire Community 14,000
EXETER WATER DEPT NH0801010 New Hampshire Community 12,236
SOMERSWORTH WATER WORKS NH2151010 New Hampshire Community 12,000
LEBANON WATER DEPT NH1321010 New Hampshire Community 10,050
PEASE TRADE PORT NH1951020 New Hampshire Community 9,900
BERLIN WATER WORKS NH0231010 New Hampshire Community 9,575
MILFORD WATER UTILITIES DEPT NH1561010 New Hampshire Community 9,500
CLAREMONT WATER DEPT NH0461010 New Hampshire Community 9,000
HANOVER WATER DEPT NH1071010 New Hampshire Community 8,500
DURHAM WATER DEPT NH0691020 New Hampshire Community 7,000
FRANKLIN WATER WORKS NH0851010 New Hampshire Community 7,000
LITCHFIELD NH1371010 New Hampshire Community 7,000
HAMPSTEAD AREA WATER NH1031010 New Hampshire Community 6,953
PLYMOUTH VLG WATER AND SEWER NH1941010 New Hampshire Community 6,700
LITTLETON WATER AND LIGHT NH1381010 New Hampshire Community 6,500
WOLFEBORO WATER AND SEWER NH2561010 New Hampshire Community 6,000
NORTH CONWAY WATER PCT NH0511030 New Hampshire Community 5,500
LONDONDERRY NH1391010 New Hampshire Community 5,380
PEMBROKE WATER WORKS NH1861010 New Hampshire Community 5,200
NEWMARKET WATER WORKS NH1731010 New Hampshire Community 5,030
NEWPORT WATER WORKS NH1741010 New Hampshire Community 5,000
CENTRAL HOOKSETT WATER PCT NH1181010 New Hampshire Community 4,650
PETERBOROUGH WATER WORKS NH1871010 New Hampshire Community 4,500
RYE WATER DIST NH2041010 New Hampshire Community 4,300
PENACOOK BOSCAWEN WATER PCT NH0251010 New Hampshire Community 3,800
LOWER BARTLETT WATER PCT NH0161020 New Hampshire Community 3,800
JAFFREY WATER WORKS NH1221010 New Hampshire Community 3,800
MEREDITH WATER DEPT NH1521010 New Hampshire Community 3,750
BRISTOL WATER WORKS NH0301010 New Hampshire Community 3,575
VILLAGE DIST OF EASTMAN NH0951010 New Hampshire Community 3,400
LINCOLN WATER WORKS NH1351010 New Hampshire Community 3,300
RAYMOND WATER DEPT NH1971010 New Hampshire Community 3,300
FARMINGTON WATER DEPT NH0811010 New Hampshire Community 3,250
WATERVILLE VALLEY WATER DIST NH2441010 New Hampshire Community 3,150
GOFFSTOWN VILLAGE PCT NH0911010 New Hampshire Community 3,000
LITTLE POND ESTATES NH0192080 New Hampshire Community 3,000
COGSWELL SPRINGS WATER WORKS NH1121010 New Hampshire Community 3,000