New Hampshire tap water quality
681 community water systems
83.3%
exceed lead action level
(229/275 systems)
(229/275 systems)
31.3%
PFOA/PFOS detected
(15/48 systems)
(15/48 systems)
Largest water systems
Lead is the LCR 90th-percentile result; a value above 0.015 mg/L exceeds the
EPA action level. “—” means no lead sample is on file for that system.
| System | City | Population | Lead (p90) |
|---|---|---|---|
| MANCHESTER WATER WORKS | MANCHESTER | 123,500 | 0.0125 mg/L |
| PENNICHUCK WATER WORKS | NASHUA | 88,853 | 0.0107 mg/L |
| CONCORD WATER DEPT | CONCORD | 44,215 | 0.0106 mg/L |
| PORTSMOUTH WATER WORKS | PORTSMOUTH | 33,000 | 0.0139 mg/L |
| KEENE WATER DEPT | KEENE | 30,000 | 0.0070 mg/L |
| DOVER WATER DEPT | DOVER | 29,000 | 0.0142 mg/L |
| MERRIMACK VILLAGE DIST | MERRIMACK | 25,500 | 0.0100 mg/L |
| ROCHESTER WATER DEPT | ROCHESTER | 25,000 | 0.0070 mg/L |
| SALEM WATER DEPT | SALEM | 21,000 | 0.0114 mg/L |
| DERRY WATER DEPT | DERRY | 17,370 | 0.0067 mg/L |
| LACONIA WATER WORKS | LACONIA | 17,125 | 0.0104 mg/L |
| HUDSON WATER DEPT | HUDSON | 16,700 | 0.0086 mg/L |
| UNH/DURHAM WATER SYS | DURHAM | 16,000 | 0.0420 mg/L |
| SEABROOK WATER DEPT | SEABROOK | 14,000 | 0.0051 mg/L |
| LEBANON WATER DEPT | LEBANON | 13,600 | 0.0125 mg/L |
| EXETER WATER DEPT | EXETER | 12,236 | 0.0215 mg/L |
| SOMERSWORTH WATER WORKS | SOMERSWORTH | 12,200 | 0.0455 mg/L |
| PEASE TRADE PORT | PORTSMOUTH | 9,900 | 0.0752 mg/L |
| HANOVER WATER DEPT | HANOVER | 9,600 | 0.0242 mg/L |
| BERLIN WATER WORKS | BERLIN | 9,575 | 0.0638 mg/L |
| MILFORD WATER UTILITIES DEPT | MILFORD | 9,500 | 0.0064 mg/L |
| CLAREMONT WATER DEPT | CLAREMONT | 9,000 | 0.0210 mg/L |
| FRANKLIN WATER WORKS | FRANKLIN | 7,200 | 0.0180 mg/L |
| HAMPSTEAD AREA WATER | HAMPSTEAD | 7,153 | 0.0051 mg/L |
| LITCHFIELD | LITCHFIELD | 6,920 | 0.0050 mg/L |
| PLYMOUTH VLG WATER AND SEWER | PLYMOUTH | 6,700 | 0.0268 mg/L |
| LITTLETON WATER AND LIGHT | LITTLETON | 6,500 | 0.0148 mg/L |
| LONDONDERRY | LONDONDERRY | 6,255 | 0.0097 mg/L |
| WOLFEBORO WATER AND SEWER | WOLFEBORO | 6,000 | 0.0100 mg/L |
| NORTH CONWAY WATER PCT | CONWAY | 5,500 | 0.0076 mg/L |
| PEMBROKE WATER WORKS | PEMBROKE | 5,200 | 0.0080 mg/L |
| NEWMARKET WATER WORKS | NEWMARKET | 5,030 | 0.0082 mg/L |
| NEWPORT WATER WORKS | NEWPORT | 5,000 | 0.0150 mg/L |
| CENTRAL HOOKSETT WATER PCT | HOOKSETT | 4,650 | 0.0225 mg/L |
| PETERBOROUGH WATER WORKS | PETERBOROUGH | 4,500 | 0.0100 mg/L |
| RYE WATER DIST | RYE | 4,300 | 0.0056 mg/L |
| LOWER BARTLETT WATER PCT | BARTLETT | 3,850 | 0.0140 mg/L |
| JAFFREY WATER WORKS | JAFFREY | 3,800 | 0.0058 mg/L |
| PENACOOK BOSCAWEN WATER PCT | BOSCAWEN | 3,800 | 0.0339 mg/L |
| MEREDITH WATER DEPT | MEREDITH | 3,750 | 0.0188 mg/L |
| BRISTOL WATER WORKS | BRISTOL | 3,575 | 0.0564 mg/L |
| VILLAGE DIST OF EASTMAN | GRANTHAM | 3,400 | 0.0203 mg/L |
| RAYMOND WATER DEPT | RAYMOND | 3,300 | 0.0102 mg/L |
| LINCOLN WATER WORKS | LINCOLN | 3,300 | 0.1302 mg/L |
| GOFFSTOWN VILLAGE PCT | GOFFSTOWN | 3,250 | 0.1615 mg/L |
| NEW LONDON SPRINGFIELD WATER | NEW LONDON | 3,250 | 0.0672 mg/L |
| FARMINGTON WATER DEPT | FARMINGTON | 3,250 | 0.0200 mg/L |
| WATERVILLE VALLEY WATER DIST | WATERVILLE VALLEY | 3,150 | 0.0648 mg/L |
| LITTLE POND ESTATES | BEDFORD | 3,000 | — |
| HOOKSETT VILLAGE WATER PCT | HOOKSETT | 3,000 | — |
| COGSWELL SPRINGS WATER WORKS | HENNIKER | 3,000 | 0.0190 mg/L |
| WOODSTOCK WATER DEPT | WOODSTOCK | 2,950 | — |
| CHARLESTOWN WATER WORKS | CHARLESTOWN | 2,850 | 0.0190 mg/L |
| WINCHESTER WATER DEPT | WINCHESTER | 2,800 | — |
| CONWAY WATER AND SEWER | CONWAY | 2,745 | — |
| GROVETON WATER SYS | NORTHUMBERLAND | 2,650 | 0.0300 mg/L |
| GORHAM WATER AND SEWER DEPT | GORHAM | 2,630 | — |
| LANCASTER WATER DEPT | LANCASTER | 2,500 | — |
| TILTON NORTHFIELD WATER DIST | NORTHFIELD | 2,500 | 0.0620 mg/L |
| LOCKE LAKE | BARNSTEAD | 2,308 | — |
| PARADISE SHORES | MOULTONBOROUGH | 2,060 | 0.0370 mg/L |
| HILLSBOROUGH WATER WORKS | HILLSBOROUGH | 2,000 | 0.0302 mg/L |
| WOODSVILLE WATER AND LIGHT | HAVERHILL | 1,950 | 0.0360 mg/L |
| NORTH HINSDALE WATER DEPT | HINSDALE | 1,800 | — |
| ALTON WATER WORKS | ALTON | 1,800 | 0.1460 mg/L |
| WILTON WATER WORKS | WILTON | 1,790 | 0.0630 mg/L |
| BETHLEHEM VILLAGE DIST | BETHLEHEM | 1,750 | 0.0498 mg/L |
| N SWANZEY WATER AND FIRE PRCT | SWANZEY | 1,700 | — |
| ROLLINSFORD WATER SEWER DIST | ROLLINSFORD | 1,688 | 0.0547 mg/L |
| SUNAPEE WATER WORKS | SUNAPEE | 1,680 | 0.0632 mg/L |
| WHITEFIELD WATER | WHITEFIELD | 1,640 | — |
| PITTSFIELD AQUEDUCT | PITTSFIELD | 1,625 | 0.0700 mg/L |
| BELMONT WATER DEPT | BELMONT | 1,612 | 0.0850 mg/L |
| EPPING WATER AND SEWER DEPT | EPPING | 1,600 | — |
| HINSDALE WATER DEPT/DOWNTOWN | HINSDALE | 1,600 | — |
| CONTOOCOOK VILLAGE PCT | HOPKINTON | 1,600 | 0.0370 mg/L |
| ASHLAND WATER DEPT | ASHLAND | 1,525 | 0.0346 mg/L |
| GUNSTOCK ACRES VILLAGE DIST | GILFORD | 1,440 | 0.0340 mg/L |
| SANBORNVILLE WATER DEPT | WAKEFIELD | 1,425 | 0.0474 mg/L |
| DREW WOODS | DERRY | 1,413 | — |
| ROCKINGHAM COUNTY COMPLEX | BRENTWOOD | 1,387 | 0.0220 mg/L |
| ENFIELD WATER DEPT | ENFIELD | 1,345 | — |
| COLEBROOK WATER WORKS | COLEBROOK | 1,300 | 0.0310 mg/L |
| EMERALD LAKE | HILLSBOROUGH | 1,300 | — |
| WATERVILLE ESTATE VLG DIST/W | CAMPTON | 1,250 | 0.0595 mg/L |
| TROY WATER WORKS | TROY | 1,200 | 0.0605 mg/L |
| VILLAGE DISTRICT OF EIDELWEISS | MADISON | 1,200 | — |
| POWDER HILL | BEDFORD | 1,148 | — |
| GRASMERE WATER PCT/MAIN | GOFFSTOWN | 1,125 | — |
| GREENVILLE WATER DEPT | GREENVILLE | 1,100 | 0.1100 mg/L |
| WALPOLE WATER DEPT | WALPOLE | 1,057 | — |
| LISBON WATER DEPT | LISBON | 1,010 | 0.0222 mg/L |
| EXETER RIVER MOBILE HOME PARK | EXETER | 980 | — |
| CABOT PRESERVE | BEDFORD | 965 | — |
| ANTRIM SEWER AND WATER DEPT | ANTRIM | 920 | — |
| WILLIAMSBURG | PELHAM | 910 | — |
| NEW CASTLE WATER WORKS | NEW CASTLE | 910 | 0.0474 mg/L |
| BROOK PARK ESTS | LONDONDERRY | 880 | — |
| CARROLL WATER WORKS | CARROLL | 875 | 0.0278 mg/L |
| OSSIPEE WATER DEPT | OSSIPEE | 860 | 0.0298 mg/L |