New Hampshire Water Systems
678 community water systems in New Hampshire, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).
Water Systems
678
Total Violations
1,402
Health Violations
284 systems
Population Served
880,899
New Hampshire operates 678 community water systems regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. Together these utilities serve an estimated 880,899 residents, each filing compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency.
Across the state, SDWIS records contain 1,402 total violations, of which 284 systems carry at least one active health-based violation, a Maximum Contaminant Level (MCL) exceedance or treatment-technique failure. That represents roughly 42% of New Hampshire systems.
Violation counts reflect both infrastructure realities and reporting diligence, a state with more small rural systems will accumulate more monitoring-type violations without necessarily delivering worse water. Health-based violations are the stronger safety signal. A past violation does not itself indicate current unsafe water; utilities must notify customers, remediate, and publish an annual Consumer Confidence Report. All numbers below draw directly from the federal SDWIS record.
Which water systems have violations? (202)
| # | System Name | Violations | Health |
|---|---|---|---|
| 1 | NEW HAMPTON VILLAGE PCT Glen | 99 | Yes |
| 2 | BETHLEHEM VILLAGE DIST Bethlehem | 45 | Yes |
| 3 | CONTOOCOOK VILLAGE PCT Concord | 26 | Yes |
| 4 | FREEDOM HILL/PINE RIDGE EST Loudon | 25 | Yes |
| 5 | WARDE REHABILITATION/NURSING Windham | 25 | Yes |
| 6 | EPSOM HEALTHCARE CTR Epsom | 24 | Yes |
| 7 | ROCKHOUSE MOUNTAIN Conway | 22 | Yes |
| 8 | MONTROSE CONDOS Epping | 22 | Yes |
| 9 | EXETER WATER DEPT Exeter | 21 | Yes |
| 10 | ANDOVER VILLAGE DIST Andover | 20 | Yes |
| 11 | SOUTH WEARE WATER Weare | 19 | Yes |
| 12 | LANDMARK ESTATES CONDOS Pelham | 18 | Yes |
| 13 | BARTLETT VILLAGE PCT Bartlett | 17 | Yes |
| 14 | ROCK RIMMON COOPERATIVE East Hampstead | 17 | Yes |
| 15 | 175 ESTATES Moultonborough | 16 | Yes |
| 16 | BARKLAND ACRES Derry | 15 | Yes |
| 17 | PLAISTOW WATER DEPT Atkinson | 14 | Yes |
| 18 | PROFILE APARTMENTS Madbury | 14 | Yes |
| 19 | LINCOLN WATER WORKS Lincoln | 12 | Yes |
| 20 | FREEDOM VILLAGE CONDOS Gilford | 12 | Yes |
| 21 | MUIRFIELD CLUSTER Stratham | 12 | Yes |
| 22 | MEREDITH WATER DEPT Meredith | 11 | Yes |
| 23 | NEW CASTLE WATER WORKS Portsmouth | 11 | Yes |
| 24 | VILLAGE DISTRICT OF EIDELWEISS Madison | 10 | Yes |
| 25 | JACKSON WATER PCT Jackson | 10 | Yes |
| 26 | CROTCHED MOUNTAIN SCHOOL Greenfield | 9 | Yes |
| 27 | GOFFSTOWN VILLAGE PCT Goffstown | 8 | Yes |
| 28 | LOCKE LAKE Nashua | 8 | Yes |
| 29 | SUNAPEE WATER WORKS Sunapee | 8 | Yes |
| 30 | LONG POND WOODS Atkinson | 8 | Yes |
| 31 | WEDIKO SCHOOL Windsor | 7 | Yes |
| 32 | ELM BROOK VILLAGE Contoocook | 7 | Yes |
| 33 | HAMPSTEAD AREA WATER Atkinson | 6 | Yes |
| 34 | EMERALD LAKE Hillsboro | 6 | Yes |
| 35 | COTTON FARMS MHP East Hampstead | 6 | Yes |
| 36 | TRANQUILITY ESTATES Concord | 6 | Yes |
| 37 | TOWN LINE VILLAGE Holderness | 6 | Yes |
| 38 | CHISHOLM FARM Exeter | 6 | Yes |
| 39 | BIRCHES OF WOLFEBORO COOP Wolfeboro | 6 | Yes |
| 40 | CASTLE REACH Nashua | 6 | Yes |
| 41 | MILL BROOK VILLAGE Moultonborough | 6 | Yes |
| 42 | SILVER LAKE ESTATES Hollis | 6 | Yes |
| 43 | PARADISE SHORES Moultonborough | 5 | Yes |
| 44 | ENFIELD WATER DEPT Enfield | 5 | Yes |
| 45 | CATAMOUNT HILL Concord | 5 | Yes |
| 46 | CHESHIRE COUNTY COMPLEX Keene | 5 | Yes |
| 47 | HOPKINTON VILLAGE PCT Hopkinton | 5 | Yes |
| 48 | WESTGATE ESTATES Raymond | 5 | Yes |
| 49 | THE PINES AT ARUNDEL Epsom | 5 | Yes |
| 50 | BRAKE HILL ACRES Moultonborough | 5 | Yes |
| 51 | GRIGGS MOBILE HOMES Epsom | 5 | Yes |
| 52 | COUNTRY VILLAGE MHP Freedom | 5 | Yes |
| 53 | ALTON WATER WORKS Alton | 4 | Yes |
| 54 | ROLLINSFORD WATER SEWER DIST Rollinsford | 4 | Yes |
| 55 | CANAAN WATER DEPT Canaan | 4 | Yes |
| 56 | RIVER RUN Exeter | 4 | Yes |
| 57 | LANCASTER FARMS Atkinson | 4 | Yes |
| 58 | FAR ECHO HARBOR Moultonborough | 4 | Yes |
| 59 | THORNHILL CONDOS Hampton | 4 | Yes |
| 60 | NORTH COUNTRY VILLAGE Center Tuftonboro | 4 | Yes |
| 61 | STILLINGS GRANT Bartlett | 4 | Yes |
| 62 | PONDEROSA MHP Salem | 4 | Yes |
| 63 | GOLDEN HILL Bedford | 4 | Yes |
| 64 | WOOD HILL VILLAGE Henniker | 4 | Yes |
| 65 | COPPLE CROWN VILLAGE DISTRICT New Durham | 4 | Yes |
| 66 | DARBY FIELD COMMONS Hooksett | 4 | Yes |
| 67 | MANSFIELD WOODS Moultonborough | 4 | Yes |
| 68 | BEEBE RIVER Campton | 4 | Yes |
| 69 | ROCHESTER WATER DEPT Rochester | 3 | Yes |
| 70 | LEBANON WATER DEPT Lebanon | 3 | Yes |
| 71 | LANCASTER WATER DEPT Lancaster | 3 | Yes |
| 72 | WHITEFIELD WATER Whitefield | 3 | Yes |
| 73 | GUNSTOCK ACRES VILLAGE DIST Gilford | 3 | Yes |
| 74 | COLEBROOK WATER WORKS Colebrook | 3 | Yes |
| 75 | WATERVILLE ESTATE VLG DIST/W Campton | 3 | Yes |
| 76 | WEST SWANZEY WATER West Swanzey | 3 | Yes |
| 77 | HALES LOCATION Hales Location | 3 | Yes |
| 78 | ACKERMAN RETIREMENT PARK Derry | 3 | Yes |
| 79 | CARROLL COUNTY COMPLEX Ossipee | 3 | Yes |
| 80 | CENTENNIAL ESTATES Derry | 3 | Yes |
| 81 | IRON WHEEL MHP Danville | 3 | Yes |
| 82 | FOREST EDGE Intervale | 3 | Yes |
| 83 | VINEYARDS Exeter | 3 | Yes |
| 84 | BOW LAKE ESTATES Atkinson | 3 | Yes |
| 85 | MOUNTAIN VIEW APTS Laconia | 3 | Yes |
| 86 | WOOD MEADOW ESTATES Nashua | 3 | Yes |
| 87 | TENNEY BROOK CONDOS I Sandown | 3 | Yes |
| 88 | WINHALL ACRES Bedford | 3 | Yes |
| 89 | SUGAR HILL MANOR MHP Weare | 3 | Yes |
| 90 | STAR RIDGE Freedom | 3 | Yes |
| 91 | PILLSBURY LAKE/FRANKLIN PIERCE Webster | 3 | Yes |
| 92 | BARTLETT PLACE Glen | 3 | Yes |
| 93 | CLAREMONT WATER DEPT Claremont | 2 | Yes |
| 94 | RYE WATER DIST Rye | 2 | Yes |
| 95 | MOUNTAIN LAKES WATER DISTRICT Woodsville | 2 | Yes |
| 96 | FRANCONIA VILLAGE WATER Franconia | 2 | Yes |
| 97 | MITTERSILL WATER DEPT Franconia | 2 | Yes |
| 98 | TALL TIMBERS MHP Lebanon | 2 | Yes |
| 99 | MERRYMEETING MHP Alton | 2 | Yes |
| 100 | INDIAN MOUND GOLF CLUB Moultonborough | 2 | Yes |
| 101 | OAKRIDGE CONDOS Haverhill | 2 | Yes |
| 102 | VIEW POINT COOP Swanzey | 2 | Yes |
| 103 | SUNRISE ESTATES Nashua | 2 | Yes |
| 104 | HUDSON MOBILE HOME ESTS Nashua | 2 | Yes |
| 105 | HEMLOCK HAVEN Portsmouth | 2 | Yes |
| 106 | WOODLAND GROVE Moultonborough | 2 | Yes |
| 107 | GOODRICH PROPERTY Glen | 2 | Yes |
| 108 | MOUNTAINSIDE ON ATTITASH ASSOC Glen | 2 | Yes |
| 109 | TOP NOTCH CONDOS Glen | 2 | Yes |
| 110 | LAKESIDE COOPERATIVE Enfield | 2 | Yes |
| 111 | OLDE COUNTRY VILLAGE Manchester | 2 | Yes |
| 112 | OLD LAKE SHORE Gilford | 2 | Yes |
| 113 | PIPER MEADOWS PRIVATE COMMUNTY Portsmouth | 2 | Yes |
| 114 | MICHAWANIC VILLAGE CONDOS Wolfeboro | 2 | Yes |
| 115 | CROTCHED MOUNTAIN MNTNC Nashua | 2 | Yes |
| 116 | MT LAUREL ESTATES Goffstown | 2 | Yes |
| 117 | WINDHAM TERRACE Windham | 2 | Yes |
| 118 | BLACKSTONE RESERVE Raymond | 2 | Yes |
| 119 | GREENFIELD HILL ESTATES Plaistow | 2 | Yes |
| 120 | ALL AMERICAN ASSISTED LIVING Kingston | 2 | Yes |
| 121 | SPRUCE VALLEY MHP Danville | 2 | Yes |
| 122 | COUNTRY HILLS OF EAST KINGSTON Exeter | 2 | Yes |
| 123 | HIGHLAND COLONY Plymouth | 2 | Yes |
| 124 | ROLLING MEADOWS CONDOS I Exeter | 2 | Yes |
| 125 | EVERGREEN DRIVE WATER Weare | 2 | Yes |
| 126 | MORNINGSIDE DRIVE Derry | 2 | Yes |
| 127 | PINE HILL COMMUNITY ASSN Meredith | 2 | Yes |
| 128 | COTTAGES AT WINDCHIMES Concord | 2 | Yes |
| 129 | MEADOW BROOK Freedom | 2 | Yes |
| 130 | GILFORD MEADOWS Gilford | 2 | Yes |
| 131 | SWEET HILL ESTATES Nashua | 2 | Yes |
| 132 | MILL POND CROSSING Stratham | 2 | Yes |
| 133 | BRANDYWINE E Kingston | 2 | Yes |
| 134 | KINGS GRANT Epsom | 2 | Yes |
| 135 | SODA BROOK Northfield | 2 | Yes |
| 136 | RAYMOND WATER DEPT Raymond | 1 | Yes |
| 137 | SANBORNVILLE WATER DEPT Sanbornville | 1 | Yes |
| 138 | TROY WATER WORKS Troy | 1 | Yes |
| 139 | GRASMERE WATER PCT/MAIN Goffstown | 1 | Yes |
| 140 | CENTURY VILLAGE CONDOS Manchester | 1 | Yes |
| 141 | RIVER RUN CONDOS North Conway | 1 | Yes |
| 142 | WARNER VILLAGE WATER DIST Warner | 1 | Yes |
| 143 | NEWFIELDS VLG WATER AND SEWER Newfields | 1 | Yes |
| 144 | PINELAND PARK Exeter | 1 | Yes |
| 145 | SAMOSET AT WINNIPESAUKEE Manchester | 1 | Yes |
| 146 | LEDGES AT NEWFOUND LAKE Gilford | 1 | Yes |
| 147 | HIDDEN VALLEY/MASON Moultonborough | 1 | Yes |
| 148 | OSSIPEE MOUNTAINS ESTATES Center Ossipee | 1 | Yes |
| 149 | MAPLEVALE AND CRICKET HILL Atkinson | 1 | Yes |
| 150 | SACO WOODS CONDOS Glen | 1 | Yes |
| 151 | PATRICIAN SHORES Center Harbor | 1 | Yes |
| 152 | PLEASANT LAKE MHP Warner | 1 | Yes |
| 153 | ACORN TERRACE Rochester | 1 | Yes |
| 154 | WESCO UTILITIES Nashua | 1 | Yes |
| 155 | SOUTH MAIN STREET WATER DIST Warren | 1 | Yes |
| 156 | BARRINGTON MOBILE HOME ESTATES Dover | 1 | Yes |
| 157 | PENDLETON COVE Moultonborough | 1 | Yes |
| 158 | ERROL WATER WORKS/WEST Errol | 1 | Yes |
| 159 | MOUNTAINSIDE AT CROTCHED MTN Nashua | 1 | Yes |
| 160 | WHIP O WILL Plymouth | 1 | Yes |
| 161 | LEE OAK COOPERATIVE Barrington | 1 | Yes |
| 162 | COW HILL WELLHOUSE Stratham | 1 | Yes |
| 163 | DEER RUN Moultonborough | 1 | Yes |
| 164 | LAKE SHORE PARK Gilford | 1 | Yes |
| 165 | WENTWORTH COVE ESTATES Moultonborough | 1 | Yes |
| 166 | HILL TOP Raymond | 1 | Yes |
| 167 | EAGLES REST MHP Alton | 1 | Yes |
| 168 | BROOKSIDE CROSSING Manchester | 1 | Yes |
| 169 | KOS MANUFACTURED HOUSING CMNTY Loudon | 1 | Yes |
| 170 | WHITTEMORE SHORES Hill | 1 | Yes |
| 171 | FOREST RIDGE Nashua | 1 | Yes |
| 172 | ORFORD VILLAGE DIST Orford | 1 | Yes |
| 173 | DEER COVE WATER Moultonborough | 1 | Yes |
| 174 | MOONGATE FARM Stratham | 1 | Yes |
| 175 | PACKER MEADOWS Bedford | 1 | Yes |
| 176 | GILFORD FOREST ESTATES Gilford | 1 | Yes |
| 177 | STANYAN ROAD Derry | 1 | Yes |
| 178 | WEST POINT Moultonborough | 1 | Yes |
| 179 | CEDAR CREEK Portsmouth | 1 | Yes |
| 180 | WATERFORD VILLAGE ESTATES Atkinson | 1 | Yes |
| 181 | FREEDOM POND New Ipswich | 1 | Yes |
| 182 | BATH VILLAGE WATER WORKS Bath | 1 | Yes |
| 183 | ASHUELOT RIVER APTS Bedford | 1 | Yes |
| 184 | GOVERNORS FOREST Fremont | 1 | Yes |
| 185 | MELLING GLEN Epping | 1 | Yes |
| 186 | BRETON WOODS DEV Suncook | 1 | Yes |
| 187 | COLONIAL POPLIN NURSING HOME Fremont | 1 | Yes |
| 188 | WENTWORTH ACRES Moultonborough | 1 | Yes |
| 189 | WYNRIDGE CONDOS Windham | 1 | Yes |
| 190 | RIVERSIDE COBB FARM Glen | 1 | Yes |
| 191 | FARLEY RD ESTATES Nashua | 1 | Yes |
| 192 | TUXBURY MEADOWS Plaistow | 1 | Yes |
| 193 | KUNCANOWET HILLS MOBILE HOME Weare | 1 | Yes |
| 194 | BEECH TREE COOPERATIVE Exeter | 1 | Yes |
| 195 | DANIELS LAKE Nashua | 1 | Yes |
| 196 | NORTH PINES Glen | 1 | Yes |
| 197 | BLACK RIVER OVERLOOK Bedford | 1 | Yes |
| 198 | HILLCREST MANOR APTS Nashua | 1 | Yes |
| 199 | FITZWILLIAM VILLAGE/LAUGHNER Fitzwilliam | 1 | Yes |
| 200 | HILLSIDE INN CONDOS Hebron | 1 | Yes |
| 201 | PLEASANT VALLEY PARK ESTATES Winnisquam | 1 | Yes |
| 202 | SACO RIVER FOREST Freedom | 1 | Yes |
Systems with No Violations (298)
298 water systems in New Hampshire have zero recorded violations. Showing the 50 largest by population served.
MANCHESTER WATER WORKS (123,500) PENNICHUCK WATER WORKS (89,073) CONCORD WATER DEPT (44,215) PORTSMOUTH WATER WORKS (33,000) KEENE WATER DEPT (30,000) DOVER WATER DEPT (29,000) MERRIMACK VILLAGE DIST (25,500) LACONIA WATER WORKS (21,000) SALEM WATER DEPT (21,000) DERRY WATER DEPT (17,210) HUDSON WATER DEPT (16,700) UNH/DURHAM WATER SYS (16,000) SEABROOK WATER DEPT (14,000) SOMERSWORTH WATER WORKS (12,000) PEASE TRADE PORT (9,900) BERLIN WATER WORKS (9,575) MILFORD WATER UTILITIES DEPT (9,500) HANOVER WATER DEPT (8,500) FRANKLIN WATER WORKS (7,000) LITCHFIELD (7,000) PLYMOUTH VLG WATER AND SEWER (6,700) LITTLETON WATER AND LIGHT (6,500) WOLFEBORO WATER AND SEWER (6,000) NORTH CONWAY WATER PCT (5,500) LONDONDERRY (5,380) PEMBROKE WATER WORKS (5,200) NEWMARKET WATER WORKS (5,030) NEWPORT WATER WORKS (5,000) CENTRAL HOOKSETT WATER PCT (4,650) PETERBOROUGH WATER WORKS (4,500) LOWER BARTLETT WATER PCT (3,800) PENACOOK BOSCAWEN WATER PCT (3,800) JAFFREY WATER WORKS (3,800) BRISTOL WATER WORKS (3,575) VILLAGE DIST OF EASTMAN (3,400) FARMINGTON WATER DEPT (3,250) WATERVILLE VALLEY WATER DIST (3,150) LITTLE POND ESTATES (3,000) COGSWELL SPRINGS WATER WORKS (3,000) HOOKSETT VILLAGE WATER PCT (3,000) WOODSTOCK WATER DEPT (2,950) CHARLESTOWN WATER WORKS (2,850) WINCHESTER WATER DEPT (2,800) NEW LONDON SPRINGFIELD WATER (2,750) CONWAY WATER AND SEWER (2,745) GROVETON WATER SYS (2,650) GORHAM WATER AND SEWER DEPT (2,630) TILTON NORTHFIELD WATER DIST (2,500) WOODSVILLE WATER AND LIGHT (2,075) HILLSBOROUGH WATER WORKS (2,000) +248 more
All Water Systems in New Hampshire (678)
Page 3 of 14, ordered by population served.
Frequently Asked Questions
How many water systems are in New Hampshire?
New Hampshire has 678 community water systems tracked by the EPA, serving a combined population of 880,899 people.
How many water systems in New Hampshire have health violations?
284 water systems in New Hampshire have health-based violations, which include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. These represent 42% of all systems in the state.
What is the total number of water violations in New Hampshire?
New Hampshire water systems have accumulated 1,402 total violations across all 678 community water systems.
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About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Only community water systems (CWS) are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.