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EWG's Tap Water Database — 2021 UPDATE

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New Hampshire

  • 711 Utilities

  • Serving: 879,000

  • Data available: 2014-2019

  • Contaminants Found: 114

 

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 - NHMonroe, NH23,000
Concord Water DepartmentConcord, NH44,000
Derry Water DepartmentDerry, NH15,145
Dover Water DepartmentDover, NH28,000
Exeter Water DepartmentExeter, NH11,000
Hudson Water DepartmentHudson, NH16,100
Keene Water DepartmentKeene, NH25,000
Laconia Water WorksLaconia, 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 April 2019 to March 2021 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
New Hampton Village PctNew Hampton, NH60050
Rolling Acres Mobile Home ParkMerrimack, NH10030
Bitim ApartmentsLondonderry, NH2826
Gilford Village Water DistrictGilford, NH13020
West Pine CondosDerry, NH6020
Contoocook Village PctContoocook, NH1,60020
Rolling Meadows Condos IExeter, NH8010
Abenaki Water/white Rock WaterGilford, NH23810
Alton Water WorksAlton, NH1,75010
Elm Brook VillageContoocook, NH9010
Hampstead Area WaterAtkinson, NH2,8388
Dustin HomesteadRochester, NH1507
Westgate EstatesRaymond, NH1156
Ossipee Mountains EstatesCenter Ossipee, NH2555
Flintlock ApartmentsManchester, NH305
Mountain View EstatesMoultonborough, NH385
Chocorua MeadowsChocorua, NH535
Camelot IIIDerry, NH305
Dearborn RidgeAtkinson, NH255
Hopkinton Village PctHooksett, NH2155
Emerald LakeHenniker, NH1,3005
Tyrol Well AIntervale, NH445
Rosebrook WaterGilford, NH1,0505
Camelot CourtAtkinson, NH453
Country MeadowsNew Hampton, NH282
Rochester Water DepartmentRochester, NH25,0002
Village District of EastmanGrantham, NH3,0001
Wynridge CondosWindham, NH581
Evergreen Drive WaterWeare, NH801
Country Lane ManorCandia, NH851

Large utilities that accumulated/accrued the most violation points as of April 2019 to March 2021 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
Rochester Water DepartmentRochester, NH25,0002

Contaminants found in New Hampshire above health guidelines

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

Total trihalomethanes (TTHMs)
280791,468286801,729

Bromodichloromethane
246785,078247786,318

Radium, combined (-226 & -228)
519760,568523760,444

Chloroform
200750,196239775,507

Haloacetic acids (HAA5)
151750,153151750,153

Dibromochloromethane
232715,430240748,930

Dichloroacetic acid
125655,426128686,906

Trichloroacetic acid
103623,187104651,187

Perfluorooctanoic acid (PFOA)
160536,179160536,179

Haloacetic acids (HAA9)
37521,32944594,864

Chromium (hexavalent)
39517,82940528,829

Nitrate
230362,879274410,625

Dibromoacetic acid
62255,61962255,619

Arsenic
276199,455276199,455

Perfluorooctane sulfonate (PFOS)
79195,16793336,388

Chlorate
8152,66043588,479

Perfluorobutane sulfonate (PFBS)
54129,58962160,939

Bromoform
71107,368141343,086

Uranium
276104,396349248,835

Perfluorohexane sulfonate (PFHXS)
4398,23263221,505

Perfluoroheptanoic acid (PFHPA)
2879,59435242,386

Nitrate and nitrite
5163,3197671,909

Manganese
7253,850538833,225

Tetrachloroethylene (perchloroethylene)
836,826836,826

Bromochloroacetic acid
2236,7502236,750

Cadmium
19,00019,000

Radon
145,575145,575

Benzene
11,68811,688

Beryllium
61,0821013,982

1,4-Dioxane
27231351,123

Antimony
363942,389

Thallium
22902290

Di(2-ethylhexyl) phthalate
1180113,818

Trichloroethylene
26353,411

Perfluorononanoic acid (PFNA)
263528,024

Contaminants found in New Hampshire above legal limits