The Power of Information

National Drinking Water Database

Combined Uranium (mg/L) in New Hampshire

Uranium is a radioactive element commonly found in most rocks; processed uranium ore is used for power generation and weapons manufacture. [read more]

The Most Polluted Communities in New Hampshire

409 water utilities reported detecting Combined Uranium (mg/L) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Combined Uranium (mg/L) level

RankSystem Population Served Positive test results of total reported tests Average Level
1High Mowing School
1403 of 340.33 ppb
(32 to 57 ppb)
2Saco Woods Condominiums
Conway, NH
24014 of 1427.26 ppb
(0.06 to 69 ppb)
3Saco Pines
Conway, NH
501 of 123 ppb
(23 ppb)
4Olde Country Village Townhouse
Londonderry, NH
13010 of 1022.81 ppb
(0.02 to 39 ppb)
5Rolling Acres Mobile Home Park
Mont Vernon, NH
10018 of 1822.12 ppb
(0.03 to 68 ppb)
6Olde Towne
Allenstown, NH
24310 of 1022.11 ppb
(0.02 to 51 ppb)
7Meadow Brook AT Sunapee
331 of 122 ppb
(22 ppb)
8Fitzwilliam Village /Massin
Fitzwilliam, NH
5317 of 1721.21 ppb
(0.02 to 53 ppb)
9Concord Group Information Svs
353 of 321.05 ppb
(0.08 to 63 ppb)
10Millville Circle /South
Salem, NH
481 of 120 ppb
(20 ppb)

Health Based Limits for Combined Uranium (mg/L)

Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.0.5 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.20 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.30 ppb

Violation Summary for Combined Uranium (mg/L) in New Hampshire

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in New Hampshire since 2004

Violation TypeNumber of Violations
Over maximum contaminant level, Average57
Failure to monitor regularly15