U.S. water systems

New Hampshire Water Systems

New Hampshire

1,025 community water systems on record — 706 active, 319 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace New Hampshire’s official records. Always confirm current status with New Hampshire before making decisions based on this information.

Counties in New Hampshire

Belknap County (91)Carroll County (142)Cheshire County (41)Coos County (28)Grafton County (98)Hillsborough County (128)Merrimack County (83)Rockingham County (292)Strafford County (71)Sullivan County (22)

All community water systems in New Hampshire

System name	Mailing city	Population served	Status
MANCHESTER WATER WORKS	MANCHESTER	123,500	Active
PENNICHUCK WATER WORKS	NASHUA	88,853	Active
CONCORD WATER DEPT	CONCORD	44,215	Active
AQUARION WATER/NH	MONROE	34,000	Active
PORTSMOUTH WATER WORKS	PORTSMOUTH	33,000	Active
KEENE WATER DEPT	KEENE	30,000	Active
DOVER WATER DEPT	DOVER	29,000	Active
MERRIMACK VILLAGE DIST	MERRIMACK	25,500	Active
ROCHESTER WATER DEPT	ROCHESTER	25,000	Active
SALEM WATER DEPT	SALEM	21,000	Active
DERRY WATER DEPT	DERRY	17,370	Active
LACONIA WATER WORKS	LACONIA	17,125	Active
HUDSON WATER DEPT	HUDSON	16,700	Active
UNH/DURHAM WATER SYS	DURHAM	16,000	Active
SEABROOK WATER DEPT	SEABROOK	14,000	Active
LEBANON WATER DEPT	LEBANON	13,600	Active
EXETER WATER DEPT	EXETER	12,236	Active
SOMERSWORTH WATER WORKS	SOMERSWORTH	12,200	Active
PEASE TRADE PORT	PORTSMOUTH	9,900	Active
HANOVER WATER DEPT	HANOVER	9,600	Active
BERLIN WATER WORKS	BERLIN	9,575	Active
MILFORD WATER UTILITIES DEPT	MILFORD	9,500	Active
CLAREMONT WATER DEPT	CLAREMONT	9,000	Active
FRANKLIN WATER WORKS	FRANKLIN	7,200	Active
HAMPSTEAD AREA WATER	ATKINSON	7,153	Active
DURHAM WATER DEPT	DURHAM	7,000	Inactive
LITCHFIELD	NASHUA	6,920	Active
PLYMOUTH VLG WATER AND SEWER	PLYMOUTH	6,700	Active
LITTLETON WATER AND LIGHT	LITTLETON	6,500	Active
LONDONDERRY	NASHUA	6,255	Active
WOLFEBORO WATER AND SEWER	WOLFEBORO	6,000	Active
NORTH CONWAY WATER PCT	NORTH CONWAY	5,500	Active
PEMBROKE WATER WORKS	PEMBROKE	5,200	Active
NEWMARKET WATER WORKS	NEWMARKET	5,030	Active
NEWPORT WATER WORKS	NEWPORT	5,000	Active
CENTRAL HOOKSETT WATER PCT	HOOKSETT	4,650	Active
PETERBOROUGH WATER WORKS	PETERBOROUGH	4,500	Active
RYE WATER DIST	RYE	4,300	Active
LOWER BARTLETT WATER PCT	INTERVALE	3,850	Active
JAFFREY WATER WORKS	JAFFREY	3,800	Active
PENACOOK BOSCAWEN WATER PCT	NASHUA	3,800	Active
MEREDITH WATER DEPT	MEREDITH	3,750	Active
BRISTOL WATER WORKS	BRISTOL	3,575	Active
VILLAGE DIST OF EASTMAN	GRANTHAM	3,400	Active
LINCOLN WATER WORKS	LINCOLN	3,300	Active
RAYMOND WATER DEPT	RAYMOND	3,300	Active
FARMINGTON WATER DEPT	FARMINGTON	3,250	Active
GOFFSTOWN VILLAGE PCT	GOFFSTOWN	3,250	Active
NEW LONDON SPRINGFIELD WATER	NEW LONDON	3,250	Active
WATERVILLE VALLEY WATER DIST	WATERVILLE VALLEY	3,150	Active
COGSWELL SPRINGS WATER WORKS	HENNIKER	3,000	Active
HOOKSETT VILLAGE WATER PCT	HOOKSETT	3,000	Active
LITTLE POND ESTATES	NASHUA	3,000	Active
WALNUT RIDGE/BRYANT WOODS	ATKINSON	2,950	Inactive
WOODSTOCK WATER DEPT	NORTH WOODSTOCK	2,950	Active
CHARLESTOWN WATER WORKS	CHARLESTOWN	2,850	Active
WINCHESTER WATER DEPT	WINCHESTER	2,800	Active
CONWAY WATER AND SEWER	CONWAY	2,745	Active
GROVETON WATER SYS	GROVETON	2,650	Active
GORHAM WATER AND SEWER DEPT	GORHAM	2,630	Active
LANCASTER WATER DEPT	LANCASTER	2,500	Active
SAINT ANSELM COLLEGE	—	2,500	Inactive
TILTON NORTHFIELD WATER DIST	TILTON	2,500	Active
LOCKE LAKE	NASHUA	2,308	Active
PARADISE SHORES	MOULTONBOROUGH	2,060	Active
HILLSBOROUGH WATER WORKS	HILLSBOROUGH	2,000	Active
WOODSVILLE WATER AND LIGHT	WOODSVILLE	1,950	Active
ALTON WATER WORKS	ALTON	1,800	Active
NORTH HINSDALE WATER DEPT	HINSDALE	1,800	Active
WILTON WATER WORKS	WILTON	1,790	Active
BETHLEHEM VILLAGE DIST	BETHLEHEM	1,750	Active
N SWANZEY WATER AND FIRE PRCT	N SWANZEY	1,700	Active
ROLLINSFORD WATER SEWER DIST	ROLLINSFORD	1,688	Active
SUNAPEE WATER WORKS	SUNAPEE	1,680	Active
WHITEFIELD WATER	WHITEFIELD	1,640	Active
PITTSFIELD AQUEDUCT	NASHUA	1,625	Active
BELMONT WATER DEPT	NASHUA	1,612	Active
CONTOOCOOK VILLAGE PCT	CONCORD	1,600	Active
EPPING WATER AND SEWER DEPT	EPPING	1,600	Active
HINSDALE WATER DEPT/DOWNTOWN	HINSDALE	1,600	Active
ASHLAND WATER DEPT	ASHLAND	1,525	Active
LACONIA WATER WORKS/WEIRS	LACONIA	1,500	Inactive
GUNSTOCK ACRES VILLAGE DIST	GILFORD	1,440	Active
SANBORNVILLE WATER DEPT	SANBORNVILLE	1,425	Active
DREW WOODS	NASHUA	1,413	Active
ROCKINGHAM COUNTY COMPLEX	BRENTWOOD	1,387	Active
ENFIELD WATER DEPT	ENFIELD	1,345	Active
COLEBROOK WATER WORKS	COLEBROOK	1,300	Active
EMERALD LAKE	HILLSBORO	1,300	Active
WATERVILLE ESTATE VLG DIST/W	CAMPTON	1,250	Active
FCI BERLIN	—	1,200	Inactive
TROY WATER WORKS	TROY	1,200	Active
VILLAGE DISTRICT OF EIDELWEISS	MADISON	1,200	Active
POWDER HILL	NASHUA	1,148	Active
GRASMERE WATER PCT/MAIN	GOFFSTOWN	1,125	Active
GREENVILLE WATER DEPT	GREENVILLE	1,100	Active
AMHERST VILLAGE DISTRICT	MERRIMACK	1,080	Inactive
WALPOLE WATER DEPT	WALPOLE	1,057	Active
ROSEBROOK WATER	MONROE	1,050	Active
LISBON WATER DEPT	LISBON	1,010	Active
EXETER RIVER MOBILE HOME PARK	EXETER	980	Active
WELLINGTON HILL APARTMENTS	MANCHESTER	975	Inactive
CABOT PRESERVE	NASHUA	965	Active
ANTRIM SEWER AND WATER DEPT	ANTRIM	920	Active
NEW CASTLE WATER WORKS	NEW CASTLE	910	Active
WILLIAMSBURG	NASHUA	910	Active
SUISSEVALE ON BIRCH HILL	MOULTONBOROUGH	888	Inactive
BROOK PARK ESTS	NASHUA	880	Active
CARROLL WATER WORKS	TWIN MOUNTAIN	875	Active
CENTURY VILLAGE CONDOS	MANCHESTER	875	Inactive
OSSIPEE WATER DEPT	CENTER OSSIPEE	860	Active
BEAR VIEW CROSSING	ALLENSTOWN	800	Active
EPSOM VILLAGE WATER DISTRICT	ALTON	800	Active
MILTON WATER DIST	WAKEFIELD	800	Active
MOUNTAIN LAKES WATER DISTRICT	WOODSVILLE	787	Active
BENNINGTON WATER DEPT	BENNINGTON	775	Active
MARLBOROUGH WATER WORKS	MARLBOROUGH	750	Active
MERIDEN VILLAGE WATER DIST	MERIDEN	750	Active
NO HAVERHILL WATER AND LIGHT	WOODSVILLE	750	Active
RIVER RUN CONDOS	NORTH CONWAY	750	Active
WATERVILLE ESTATE VILL DIST/E	CAMPTON	715	Inactive
VLG OF NORTHWOOD RDG WTR DIST	NORTHWOOD	688	Active
CANAAN WATER DEPT	CANAAN	684	Active
LINDERHOF MOUNTAINSIDE	INTERVALE	663	Inactive
WARNER VILLAGE WATER DIST	WARNER	660	Active
ANDOVER VILLAGE DIST	ANDOVER	650	Active
GRAFTON COUNTY COMPLEX	—	635	Inactive
BARTLETT VILLAGE PCT	BARTLETT	625	Active
N WALPOLE VILLAGE DISTRICT/LOW	BELLOWS FALLS	625	Active
SULLIVAN COUNTY COMPLEX	UNITY	625	Active
GREEN HILLS ESTS	NASHUA	618	Active
CAMPTON VILLAGE PCT	CAMPTON	600	Active
HILL WATER WORKS	HILL	600	Active
NEW HAMPTON VILLAGE PCT	GLEN	600	Active
LOV WATER	MOULTONBOROUGH	590	Active
BIRCH HILL EAST	NASHUA	560	Active
NORTHERN NH CORRECTIONAL FAC	—	560	Inactive
KENT FARM	ATKINSON	555	Inactive
BEDFORD HILLS	—	550	Inactive
BON TERRAIN	MERRIMACK	550	Inactive
NEWFIELDS VLG WATER AND SEWER	ROCHESTER	550	Active
PRECINCT OF HAVERHILL CORNER	HAVERHILL	540	Active
FRANCONIA VILLAGE WATER	FRANCONIA	535	Active
SAWMILL BROOK ESTATES	LITCHFIELD	535	Inactive
W AND E	NASHUA	528	Active
EASTMAN WATER COMPANY	GRANTHAM	500	Inactive
GEORGES MILLS WATER WORKS	SUNAPEE	500	Active
JACKSON WATER PCT	JACKSON	500	Active
MAPLE HILL ACRES	NASHUA	500	Active
MOUNTAIN HOME ESTATES ASSOC	LONDONDERRY	500	Inactive
WHITEFIELD WATER DEPT (BH)	WHITEFIELD	500	Inactive
HOLDERNESS SCH	HOLDERNESS	490	Inactive
WHISPERING WINDS	NASHUA	488	Active
COLBY POND	ATKINSON	485	Active
ROCKHOUSE MOUNTAIN	CONWAY	480	Active
MITTERSILL WATER DEPT	FRANCONIA	475	Active
GREENVILLE EST VILLAGE DIST	GREENVILLE	472	Active
PLAISTOW WATER DEPT	ATKINSON	465	Active
BADGER HILL	NASHUA	455	Active
HANCOCK WATER WORKS	HANCOCK	450	Active
WEST SWANZEY WATER	WEST SWANZEY	430	Active
W STEWARTSTOWN WATER PCT	WEST STEWARTSTOWN	428	Active
PINELAND PARK	EXETER	425	Active
WALLACE FARM APARTMENTS	—	420	Inactive
HOLIDAY ACRES /SUMMIT	ALLENSTOWN	418	Inactive
PINE GARDENS MHP	BELMONT	413	Active
RIVER RUN	EXETER	411	Active
LOCHMERE VILLAGE DIST	TILTON	405	Active
PARADISE ESTATES	NEW HAMPTON	405	Inactive
LACONIA CORRECTIONAL FACILITY	LACONIA	400	Inactive
ABENAKI WATER /LAKELAND	MONROE	395	Active
COTTON FARMS MHP	LONDONDERRY	390	Active
MOUNTAIN VALE VILLAGE MHP	CHICAGO	388	Active
HALES LOCATION	HALES LOCATION	385	Active
HILLSBORO COUNTY COMPLEX	GOFFSTOWN	385	Inactive
AVERY ESTATES	NASHUA	383	Active
CATAMOUNT HILL	CONCORD	383	Active
CHESHIRE COUNTY COMPLEX	WESTMORELAND	380	Active
FREEDOM HILL/PINE RIDGE EST	LOUDON	370	Active
ACKERMAN RETIREMENT PARK	DERRY	350	Active
KENDALWOOD ASSOCIATION I	LONDONDERRY NH	350	Inactive
KINGS TOWNE MHP	EPSOM	350	Active
TWIN RIDGE CONDOS	NASHUA	348	Active
SAMOSET AT WINNIPESAUKEE	MANCHESTER	343	Active
KENDALLWOOD CONDOMINIUMS	NASHUA	330	Inactive
GOLDEN BROOK	NASHUA	328	Active
LAKEVIEW CONDOS	WINDSOR	328	Active
MALLARDS LANDING	BELMONT	325	Active
NH COLLEGE NORTH CAMPUS	HOOKSETT	325	Inactive
NORTH CHARLESTOWN WATER DEPT	CHARLESTOWN	325	Inactive
NORDIC VILLAGE	CHEPACHET	315	Active
TRANQUILITY ESTATES	CONCORD	315	Active
INTERLAKES MOBILE HOME PARK	MEREDITH	313	Inactive
OAKWOOD TERRACE	NASHUA	310	Active
LEDGES AT NEWFOUND LAKE	GILFORD	307	Active
MINISTERIAL/PARRISH HILLS	NASHUA	305	Active
PINE GROVE MOBILE HOME PARK	SWANZEY	305	Active
LANCASTER FARMS	ATKINSON	303	Active
BIRCHVILLE ESTATES	LONDONDERRY	300	Inactive
CARDIGAN MOUNTAIN SCH	CANAAN	300	Active

Showing the 200 largest of 1,025 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.