STATE / TERRITORY LEDGER
New Hampshire drinking water system records
EPA compliance fields for active community water systems reporting at least 2,500 people served.
Systems60active CWS · pop. 2,500+
Population served774,082reported total; may overlap
Current violation flag10.0%6 systems
Serious-violator flag0.0%0 systems
01 / LARGEST SYSTEMS
Community water systems in New Hampshire
Population served is a system-reported service figure. It is not a count of unique state residents.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Manchester Water WorksNH1471010 | 123,500 | Surface water | No current violation flagged |
| Pennichuck Water WorksNH1621010 | 88,853 | Surface water | No current violation flagged |
| Concord Water DeptNH0501010 | 44,215 | Surface water | No current violation flagged |
| Aquarion Water/NhNH1051010 | 34,000 | Ground water | No current violation flagged |
| Portsmouth Water WorksNH1951010 | 33,000 | Surface water | No current violation flagged |
| Keene Water DeptNH1241010 | 30,000 | Surface water | No current violation flagged |
| Dover Water DeptNH0651010 | 29,000 | Ground water | No current violation flagged |
| Merrimack Village DistNH1531010 | 25,500 | Ground water | No current violation flagged |
| Rochester Water DeptNH2001010 | 25,000 | Surface water | Other current violation flag |
| Salem Water DeptNH2051010 | 21,000 | Surface water | No current violation flagged |
| Derry Water DeptNH0611010 | 17,370 | Surface water purchased | No current violation flagged |
| Laconia Water WorksNH1281010 | 17,125 | Surface water | No current violation flagged |
| Hudson Water DeptNH1201010 | 16,700 | Ground water | Current monitoring/reporting flag |
| Unh/Durham Water SysNH0691010 | 16,000 | Surface water | No current violation flagged |
| Seabrook Water DeptNH2111010 | 14,000 | Ground water | No current violation flagged |
| Lebanon Water DeptNH1321010 | 13,600 | Surface water | No current violation flagged |
| Exeter Water DeptNH0801010 | 12,236 | Surface water | Other current violation flag |
| Somersworth Water WorksNH2151010 | 12,200 | Surface water | No current violation flagged |
| Pease Trade PortNH1951020 | 9,900 | Ground water | No current violation flagged |
| Hanover Water DeptNH1071010 | 9,600 | Surface water | No current violation flagged |
| Berlin Water WorksNH0231010 | 9,575 | Surface water | No current violation flagged |
| Milford Water Utilities DeptNH1561010 | 9,500 | Surface water purchased | No current violation flagged |
| Claremont Water DeptNH0461010 | 9,000 | Surface water | Current monitoring/reporting flag |
| Franklin Water WorksNH0851010 | 7,200 | Ground water | No current violation flagged |
| Hampstead Area WaterNH1031010 | 7,153 | Surface water purchased | No current violation flagged |
| LitchfieldNH1371010 | 6,920 | Surface water purchased | No current violation flagged |
| Plymouth Vlg Water And SewerNH1941010 | 6,700 | Ground water | No current violation flagged |
| Littleton Water And LightNH1381010 | 6,500 | Surface water | No current violation flagged |
| LondonderryNH1391010 | 6,255 | Surface water purchased | No current violation flagged |
| Wolfeboro Water And SewerNH2561010 | 6,000 | Surface water | No current violation flagged |
| North Conway Water PctNH0511030 | 5,500 | Ground water | No current violation flagged |
| Pembroke Water WorksNH1861010 | 5,200 | Ground water | No current violation flagged |
| Newmarket Water WorksNH1731010 | 5,030 | Ground water | No current violation flagged |
| Newport Water WorksNH1741010 | 5,000 | Surface water | No current violation flagged |
| Central Hooksett Water PctNH1181010 | 4,650 | Surface water purchased | No current violation flagged |
| Peterborough Water WorksNH1871010 | 4,500 | Ground water | No current violation flagged |
| Rye Water DistNH2041010 | 4,300 | Ground water | No current violation flagged |
| Lower Bartlett Water PctNH0161020 | 3,850 | Ground water | No current violation flagged |
| Jaffrey Water WorksNH1221010 | 3,800 | Ground water | No current violation flagged |
| Penacook Boscawen Water PctNH0251010 | 3,800 | Ground water | No current violation flagged |
| Meredith Water DeptNH1521010 | 3,750 | Surface water | Other current violation flag |
| Bristol Water WorksNH0301010 | 3,575 | Ground water | No current violation flagged |
| Village Dist Of EastmanNH0951010 | 3,400 | Ground water | No current violation flagged |
| Lincoln Water WorksNH1351010 | 3,300 | Surface water | No current violation flagged |
| Raymond Water DeptNH1971010 | 3,300 | Ground water | No current violation flagged |
| Farmington Water DeptNH0811010 | 3,250 | Ground water | No current violation flagged |
| Goffstown Village PctNH0911010 | 3,250 | Surface water | No current violation flagged |
| New London Springfield WaterNH1721010 | 3,250 | Ground water | No current violation flagged |
| Waterville Valley Water DistNH2441010 | 3,150 | Ground water | No current violation flagged |
| Cogswell Springs Water WorksNH1121010 | 3,000 | Ground water | No current violation flagged |
| Hooksett Village Water PctNH1181020 | 3,000 | Ground water | No current violation flagged |
| Little Pond EstatesNH0192080 | 3,000 | Surface water purchased | No current violation flagged |
| Woodstock Water DeptNH2571020 | 2,950 | Ground water | No current violation flagged |
| Charlestown Water WorksNH0411010 | 2,850 | Ground water | No current violation flagged |
| Winchester Water DeptNH2531010 | 2,800 | Ground water | No current violation flagged |
| Conway Water And SewerNH0511010 | 2,745 | Ground water | Other current violation flag |
| Groveton Water SysNH1781010 | 2,650 | Ground water | No current violation flagged |
| Gorham Water And Sewer DeptNH0921010 | 2,630 | Surface water | No current violation flagged |
| Lancaster Water DeptNH1291010 | 2,500 | Surface water | No current violation flagged |
| Tilton Northfield Water DistNH2351010 | 2,500 | Ground water | No current violation flagged |
02 / CITY REPORTS
Browse cities
Conway2 systemsHooksett2 systemsPortsmouth2 systemsConcord1 systemsDerry1 systemsDover1 systemsDurham1 systemsExeter1 systemsHampton1 systemsHudson1 systemsKeene1 systemsLaconia1 systemsLebanon1 systemsManchester1 systemsMerrimack1 systemsNashua1 systemsRochester1 systemsSalem1 systemsSeabrook1 systemsSomersworth1 systems