New Hampshire Water Systems
681 community water systems in New Hampshire, ranked by violation count. Data from EPA Safe Drinking Water Information System (SDWIS).
Water Systems
681
Health-Based Violation Records
1,444
Health Violations
287 systems
Population Served
884,031
New Hampshire community water systems are regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act; each utility files compliance results with the state's primacy agency and, for federally listed contaminants, with the U.S. Environmental Protection Agency directly. PlainEnviro's health-based SDWIS extract above counts health-based exceedances only -- monitoring and reporting violations are not present in these figures.
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? (203)
| # | System Name | Violations | Health |
|---|---|---|---|
| 1 | NEW HAMPTON VILLAGE PCT Glen | 104 | Yes |
| 2 | BETHLEHEM VILLAGE DIST Bethlehem | 45 | Yes |
| 3 | CONTOOCOOK VILLAGE PCT Concord | 34 | 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 | EXETER WATER DEPT Exeter | 22 | Yes |
| 8 | ANDOVER VILLAGE DIST Andover | 22 | Yes |
| 9 | ROCKHOUSE MOUNTAIN Conway | 22 | Yes |
| 10 | SOUTH WEARE WATER Weare | 19 | Yes |
| 11 | LANDMARK ESTATES CONDOS Atkinson | 18 | Yes |
| 12 | JOHNSON CREEK Durham | 18 | Yes |
| 13 | BARTLETT VILLAGE PCT Bartlett | 17 | Yes |
| 14 | ROCK RIMMON COOPERATIVE East Hampstead | 17 | Yes |
| 15 | 175 ESTATES Moultonborough | 16 | Yes |
| 16 | PLAISTOW WATER DEPT Atkinson | 14 | Yes |
| 17 | FREEDOM VILLAGE CONDOS Gilford | 14 | Yes |
| 18 | PROFILE APARTMENTS Madbury | 14 | Yes |
| 19 | VILLAGE DISTRICT OF EIDELWEISS Madison | 13 | Yes |
| 20 | LINCOLN WATER WORKS Lincoln | 12 | Yes |
| 21 | MUIRFIELD CLUSTER Stratham | 12 | Yes |
| 22 | MEREDITH WATER DEPT Meredith | 11 | Yes |
| 23 | NEW CASTLE WATER WORKS New Castle | 11 | Yes |
| 24 | GOFFSTOWN VILLAGE PCT Goffstown | 10 | Yes |
| 25 | JACKSON WATER PCT Jackson | 10 | Yes |
| 26 | CROTCHED MOUNTAIN SCHOOL Greenfield | 10 | Yes |
| 27 | ENFIELD WATER DEPT Enfield | 9 | 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 | BIRCHES OF WOLFEBORO COOP Wolfeboro | 7 | Yes |
| 33 | ELM BROOK VILLAGE Contoocook | 7 | Yes |
| 34 | HAMPSTEAD AREA WATER Atkinson | 6 | Yes |
| 35 | LANCASTER WATER DEPT Lancaster | 6 | Yes |
| 36 | EMERALD LAKE Hillsboro | 6 | Yes |
| 37 | COTTON FARMS MHP Londonderry | 6 | Yes |
| 38 | TRANQUILITY ESTATES Concord | 6 | Yes |
| 39 | TOWN LINE VILLAGE Holderness | 6 | Yes |
| 40 | CHISHOLM FARM Exeter | 6 | Yes |
| 41 | MILL BROOK VILLAGE Moultonboro | 6 | Yes |
| 42 | CASTLE REACH Nashua | 6 | Yes |
| 43 | SILVER LAKE ESTATES Concord | 6 | Yes |
| 44 | PARADISE SHORES Moultonborough | 5 | Yes |
| 45 | ROLLINSFORD WATER SEWER DIST Rollinsford | 5 | Yes |
| 46 | CATAMOUNT HILL Concord | 5 | Yes |
| 47 | CHESHIRE COUNTY COMPLEX Westmoreland | 5 | Yes |
| 48 | HOPKINTON VILLAGE PCT Northwood | 5 | Yes |
| 49 | WESTGATE ESTATES Raymond | 5 | Yes |
| 50 | THE PINES AT ARUNDEL Epsom | 5 | Yes |
| 51 | BRAKE HILL ACRES Moultonborough | 5 | Yes |
| 52 | GRIGGS MOBILE HOMES Epsom | 5 | Yes |
| 53 | COUNTRY VILLAGE MHP Franklin | 5 | Yes |
| 54 | LEBANON WATER DEPT Lebanon | 4 | Yes |
| 55 | ALTON WATER WORKS Alton | 4 | Yes |
| 56 | CANAAN WATER DEPT Canaan | 4 | Yes |
| 57 | RIVER RUN Exeter | 4 | Yes |
| 58 | LANCASTER FARMS Atkinson | 4 | Yes |
| 59 | FAR ECHO HARBOR Moultonborough | 4 | Yes |
| 60 | THORNHILL CONDOS Hampton | 4 | Yes |
| 61 | NORTH COUNTRY VILLAGE Northwood | 4 | Yes |
| 62 | STILLINGS GRANT Bartlett | 4 | Yes |
| 63 | PONDEROSA MHP Salem | 4 | Yes |
| 64 | GOLDEN HILL Bedford | 4 | Yes |
| 65 | LIBERTY RIDGE MHP Loudon | 4 | Yes |
| 66 | COPPLE CROWN VILLAGE DISTRICT New Durham | 4 | Yes |
| 67 | DARBY FIELD COMMONS Hooksett | 4 | Yes |
| 68 | MANSFIELD WOODS Moultonborough | 4 | Yes |
| 69 | BEEBE RIVER Campton | 4 | Yes |
| 70 | ROCHESTER WATER DEPT Rochester | 3 | Yes |
| 71 | WHITEFIELD WATER Whitefield | 3 | Yes |
| 72 | GUNSTOCK ACRES VILLAGE DIST Gilford | 3 | Yes |
| 73 | COLEBROOK WATER WORKS Colebrook | 3 | Yes |
| 74 | WATERVILLE ESTATE VLG DIST/W Campton | 3 | Yes |
| 75 | WEST SWANZEY WATER West Swanzey | 3 | Yes |
| 76 | HALES LOCATION Hales Location | 3 | Yes |
| 77 | ACKERMAN RETIREMENT PARK Derry | 3 | Yes |
| 78 | CARROLL COUNTY COMPLEX Ossipee | 3 | Yes |
| 79 | SUNRISE ESTATES Nashua | 3 | Yes |
| 80 | CENTENNIAL ESTATES Derry | 3 | Yes |
| 81 | PIPER MEADOWS PRIVATE COMMUNTY Portsmouth | 3 | Yes |
| 82 | IRON WHEEL MHP Danville | 3 | Yes |
| 83 | FOREST EDGE N Conway | 3 | Yes |
| 84 | WOOD MEADOW ESTATES Nashua | 3 | Yes |
| 85 | VINEYARDS Exeter | 3 | Yes |
| 86 | BOW LAKE ESTATES Atkinson | 3 | Yes |
| 87 | MOUNTAIN VIEW APTS Laconia | 3 | Yes |
| 88 | STAR RIDGE Franklin | 3 | Yes |
| 89 | TENNEY BROOK CONDOS I Sandown | 3 | Yes |
| 90 | WINHALL ACRES Bedford | 3 | Yes |
| 91 | SUGAR HILL MANOR MHP Weare | 3 | Yes |
| 92 | PILLSBURY LAKE/FRANKLIN PIERCE Northwood | 3 | Yes |
| 93 | BARTLETT PLACE Glen | 3 | Yes |
| 94 | CLAREMONT WATER DEPT Claremont | 2 | Yes |
| 95 | RYE WATER DIST Rye | 2 | Yes |
| 96 | MOUNTAIN LAKES WATER DISTRICT Woodsville | 2 | Yes |
| 97 | FRANCONIA VILLAGE WATER Franconia | 2 | Yes |
| 98 | MITTERSILL WATER DEPT Franconia | 2 | Yes |
| 99 | TALL TIMBERS MHP Lebanon | 2 | Yes |
| 100 | MERRYMEETING MHP Alton | 2 | Yes |
| 101 | INDIAN MOUND GOLF CLUB Moultonborough | 2 | Yes |
| 102 | OAKRIDGE CONDOS Haverhill | 2 | Yes |
| 103 | VIEW POINT COOP Swanzey | 2 | Yes |
| 104 | HUDSON MOBILE HOME ESTS Nashua | 2 | Yes |
| 105 | HEMLOCK HAVEN Portsmouth | 2 | Yes |
| 106 | PENDLETON COVE Moultonborough | 2 | Yes |
| 107 | WOODLAND GROVE Moultonborough | 2 | Yes |
| 108 | GOODRICH PROPERTY Glen | 2 | Yes |
| 109 | MOUNTAINSIDE ON ATTITASH Glen | 2 | Yes |
| 110 | TOP NOTCH CONDOS Portsmouth | 2 | Yes |
| 111 | BROOKSIDE CROSSING Manchester | 2 | Yes |
| 112 | LAKESIDE COOPERATIVE Enfield | 2 | Yes |
| 113 | OLDE COUNTRY VILLAGE Manchester | 2 | Yes |
| 114 | OLD LAKE SHORE Gilford | 2 | Yes |
| 115 | MICHAWANIC VILLAGE CONDOS Wolfeboro | 2 | Yes |
| 116 | CROTCHED MOUNTAIN MNTNC Francestown | 2 | Yes |
| 117 | MT LAUREL ESTATES Goffstown | 2 | Yes |
| 118 | GREENFIELD HILL ESTATES Plaistow | 2 | Yes |
| 119 | WINDHAM TERRACE Windham | 2 | Yes |
| 120 | BLACKSTONE RESERVE Raymond | 2 | Yes |
| 121 | ALL AMERICAN ASSISTED LIVING Kingston | 2 | Yes |
| 122 | SPRUCE VALLEY MHP Danville | 2 | Yes |
| 123 | COUNTRY HILLS OF EAST KINGSTON Exeter | 2 | Yes |
| 124 | HIGHLAND COLONY Plymouth | 2 | Yes |
| 125 | ROLLING MEADOWS CONDOS I Exeter | 2 | Yes |
| 126 | PINE HILL COMMUNITY ASSN Meredith | 2 | Yes |
| 127 | SWEET HILL ESTATES Nashua | 2 | Yes |
| 128 | EVERGREEN DRIVE WATER Weare | 2 | Yes |
| 129 | COTTAGES AT WINDCHIMES Epping | 2 | Yes |
| 130 | MEADOW BROOK Franklin | 2 | Yes |
| 131 | GILFORD MEADOWS Gilford | 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 | MILTON WATER DIST Wakefield | 1 | Yes |
| 141 | RIVER RUN CONDOS North Conway | 1 | Yes |
| 142 | WARNER VILLAGE WATER DIST Warner | 1 | Yes |
| 143 | NEWFIELDS VLG WATER AND SEWER Rochester | 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 POND COOP AND CMPGRND 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 Las Vegas | 1 | Yes |
| 157 | ERROL WATER WORKS/WEST Errol | 1 | Yes |
| 158 | MOUNTAINSIDE AT CROTCHED MTN Nashua | 1 | Yes |
| 159 | WHIP O WILL Plymouth | 1 | Yes |
| 160 | LEE OAK COOPERATIVE Barrington | 1 | Yes |
| 161 | COW HILL WELLHOUSE Portsmouth | 1 | Yes |
| 162 | DEER RUN Moultonborough | 1 | Yes |
| 163 | LAKE SHORE PARK Gilford | 1 | Yes |
| 164 | FOREST RIDGE Nashua | 1 | Yes |
| 165 | WENTWORTH COVE ESTATES Moultonborough | 1 | Yes |
| 166 | HILL TOP Raymond | 1 | Yes |
| 167 | EAGLES REST MHP Alton | 1 | Yes |
| 168 | KOS MANUFACTURED HOUSING CMNTY Loudon | 1 | Yes |
| 169 | DEER COVE WATER Moultonborough | 1 | Yes |
| 170 | WHITTEMORE SHORES Hill | 1 | Yes |
| 171 | ORFORD VILLAGE DIST Orford | 1 | Yes |
| 172 | MASCOMA MEADOWS Lebanon | 1 | Yes |
| 173 | MOONGATE FARM Stratham | 1 | Yes |
| 174 | PACKER MEADOWS Bedford | 1 | Yes |
| 175 | GILFORD FOREST ESTATES Gilford | 1 | Yes |
| 176 | STANYAN ROAD Derry | 1 | Yes |
| 177 | WEST POINT Moultonborough | 1 | Yes |
| 178 | CEDAR CREEK Portsmouth | 1 | Yes |
| 179 | MELLING GLEN Epping | 1 | Yes |
| 180 | WATERFORD VILLAGE ESTATES Atkinson | 1 | Yes |
| 181 | FREEDOM POND Hudson | 1 | Yes |
| 182 | BATH VILLAGE WATER WORKS Bath | 1 | Yes |
| 183 | ASHUELOT RIVER APTS Bedford | 1 | Yes |
| 184 | GOVERNORS FOREST Fremont | 1 | Yes |
| 185 | BRETON WOODS DEV Suncook | 1 | Yes |
| 186 | COLONIAL POPLIN NURSING HOME Fremont | 1 | Yes |
| 187 | WENTWORTH ACRES Moultonborough | 1 | Yes |
| 188 | WYNRIDGE CONDOS Windham | 1 | Yes |
| 189 | FARLEY RD ESTATES Nashua | 1 | Yes |
| 190 | THE RESERVE AT SNOWS BROOK Atkinson | 1 | Yes |
| 191 | DANIELS LAKE Nashua | 1 | Yes |
| 192 | RIVERSIDE COBB FARM Glen | 1 | Yes |
| 193 | TUXBURY MEADOWS Plaistow | 1 | Yes |
| 194 | KUNCANOWET HILLS MOBILE HOME Weare | 1 | Yes |
| 195 | BEECH TREE COOPERATIVE Exeter | 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 East Andover | 1 | Yes |
| 202 | SACO RIVER FOREST Freedom | 1 | Yes |
| 203 | OAKWOOD HEIGHTS Intervale | 1 | Yes |
Systems with No Violations (297)
297 water systems in New Hampshire have zero recorded violations. Showing the 50 largest by population served.
MANCHESTER WATER WORKS (123,500) PENNICHUCK WATER WORKS (88,853) 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) SALEM WATER DEPT (21,000) DERRY WATER DEPT (17,370) LACONIA WATER WORKS (17,125) HUDSON WATER DEPT (16,700) UNH/DURHAM WATER SYS (16,000) SEABROOK WATER DEPT (14,000) SOMERSWORTH WATER WORKS (12,200) PEASE TRADE PORT (9,900) HANOVER WATER DEPT (9,600) BERLIN WATER WORKS (9,575) MILFORD WATER UTILITIES DEPT (9,500) FRANKLIN WATER WORKS (7,200) LITCHFIELD (6,920) PLYMOUTH VLG WATER AND SEWER (6,700) LITTLETON WATER AND LIGHT (6,500) LONDONDERRY (6,255) WOLFEBORO WATER AND SEWER (6,000) NORTH CONWAY WATER PCT (5,500) 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 (3,850) 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) NEW LONDON SPRINGFIELD WATER (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) CONWAY WATER AND SEWER (2,745) GROVETON WATER SYS (2,650) GORHAM WATER AND SEWER DEPT (2,630) TILTON NORTHFIELD WATER DIST (2,500) HILLSBOROUGH WATER WORKS (2,000) WOODSVILLE WATER AND LIGHT (1,950) +247 more
All Water Systems in New Hampshire (681)
Page 1 of 14, ordered by population served.
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Frequently Asked Questions
How many water systems are in New Hampshire?
New Hampshire has 681 community water systems tracked by the EPA, serving a combined population of 884,031 people.
How many water systems in New Hampshire have health violations?
287 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.
How many health-based violation records are in this extract for New Hampshire?
PlainEnviro's health-based EPA SDWIS extract contains 1,444 records joined to 681 active community water systems in New Hampshire. Monitoring and reporting records are not included.
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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
Read our methodology - how this data is sourced, computed, and verified.