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EWG's Tap Water Database

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New Hampshire

  • 699 Utilities

  • Serving: 868,000

  • Data available: 2010-2015

  • Contaminants Found: 86

 

EWG's drinking water quality report for New Hampshire shows results of tests conducted by the water utilities in New Hampshire and provided to EWG by the New Hampshire Department of Environmental Services.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Below are utilities in New Hampshire serving over 10,000 people, listed alphabetically.

Large utilities in New Hampshire

UtilityLocationPeople
Served
Aquarion Water - NHHampton, NH23,000
Concord Water DepartmentConcord, NH44,000
Derry Water DepartmentDerry, NH15,145
Dover Water DepartmentDover, NH28,000
Exeter Water DepartmentExeter, NH11,000
Hudson Water DepartmentMerrimack, NH16,100
Keene Water DepartmentKeene, NH25,000
Laconia Water WorksBelmont, NH15,500
Lebanon Water DepartmentLebanon, NH10,050
Manchester Water WorksManchester, NH133,000
Merrimack Village DistrictMerrimack, NH25,000
Pennichuck Water WorksMerrimack, NH87,682
Portsmouth Water WorksPortsmouth, NH33,000
Rochester Water DepartmentRochester, NH25,000
Salem Water DepartmentSalem, NH18,000
Seabrook Water DepartmentSeabrook, NH14,000
Somersworth Water WorksSomersworth, NH12,000
UNH/Durham Water SysDurham, NH16,000

Utilities that accumulated/accrued the most violation points as of October 2014 to September 2017 in New Hampshire

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Barkland AcresDerry, NH8070
Exeter Water DepartmentExeter, NH11,00066
Bethlehem Village DistrictBethlehem, NH1,70061
Tyrol Well AIntervale, NH4460
Wiggin Farm WinterberryMerrimack, NH10830
New Castle Water WorksPortsmouth, NH80030
Muirfield ClusterStratham, NH6920
Meadow Brook At SunapeeSunapee, NH5020
Rockhouse MountainConway, NH41220
Griggs Mobile HomesEpsom, NH7320
Brake Hill AcresMoultonborough, NH9820
Danville Four SeasonsEast Hampstead, NH20012
Camelot IIIWindham, NH3010
Chisholm FarmMerrimack, NH16810
Birch Hill EstatesWolfeboro, NH15910
Abenaki Water/white Rock WaterPlainville, NH2385
Wilder Village ClusterMilford, NH455
Profile ApartmentsMadbury, NH905
Boumil Grove CondosLowell, NH755
Chesleys Mobile Home ParkCampton, NH605
South Weare WaterManchester, NH2005
Top Notch CondosIntervale, NH1635
Governors GreenEpping, NH255
Whispering BrookIntervale, NH305
New Hampton Village PctNew Hampton, NH6003
Country MeadowsNew Hampton, NH283
Ossipee Mountains EstatesCenter Ossipee, NH2552
Colebrook Water WorksColebrook, NH1,2002
Rochester Water DepartmentRochester, NH25,0002
Meredith Water DepartmentMeredith, NH2,8001

Large utilities that accumulated/accrued the most violation points as of October 2014 to September 2017 in New Hampshire

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Exeter Water DepartmentExeter, NH11,00066
Rochester Water DepartmentRochester, NH25,0002

Contaminants found in New Hampshire above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Radium-226
426604,855441633,011

Total trihalomethanes (TTHMs)
116578,701130618,784

Bromodichloromethane
99574,43399574,433

Radium-228
359555,886359555,886

Chloroform
104555,790108614,170

Chromium (hexavalent)
41528,74344541,103

Dibromochloromethane
87433,85087433,850

Chlorate
9152,78047600,753

Uranium
284114,612362243,342

Arsenic
16389,45416389,454

Perfluorooctanoic acid (PFOA)
454,230454,230

Manganese
2936,903204562,040

Perfluoroheptanoic acid (PFHPA)
128,000251,000

Perfluorooctane sulfonate (PFOS)
128,000128,000

Bromoform
347,1653854,653

Benzene
11,68811,688

Beryllium
578761,537

1,4-Dioxane
2650850,608

Antimony
36394737

Tetrachloroethylene (perchloroethylene)
53695369

Nitrate
2288220464,615

Dichloroacetic acid
12501250

Trichloroacetic acid
12501250

Trichloroethylene
2633663

Di(2-ethylhexyl) phthalate
145845,738

Contaminants found in New Hampshire above legal limits

Contaminant# of UtilitiesPeople Served

Arsenic
7668

Radium, combined (-226 & -228)
2300

Fluoride
153