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National Drinking Water Database


Arsenic (total) in North Dakota


Arsenic contaminates drinking water due to mining runoff, erosion of natural deposits, emissions from glass and electronics processing and the use of arsenical compounds as wood preservatives and pesticides. [read more]

The Most Polluted Communities in North Dakota

27 water utilities reported detecting Arsenic (total) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Arsenic (total) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1City of Devils Lake
Devils Lake, ND
7,2227 of 730 ppb
(30 ppb)
2City of Granville
Granville, ND
2864 of 420 ppb
(20 ppb)
3Colony Park
Minot, ND
1001 of 120 ppb
(20 ppb)
4City of Dazey
Dazey, ND
919 of 920 ppb
(10 to 30 ppb)
5Sundale Hutterian Association
Milnor, ND
1103 of 518 ppb
(0 to 30 ppb)
6City of Karlsruhe
Karlsruhe, ND
1199 of 917.78 ppb
(10 to 30 ppb)
7City of Wildrose
Wildrose, ND
1296 of 913.33 ppb
(0 to 30 ppb)
8City of Oakes
Oakes, ND
1,9794 of 711.19 ppb
(0 to 30 ppb)
9City of Upham
Upham, ND
1559 of 910 ppb
(10 ppb)
10Talbott Trailer Court
Minot, ND
605 of 510 ppb
(10 ppb)

Health Based Limits for Arsenic (total)

StandardDescriptionLevel
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.<0.01 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.0.02 ppb
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.0.02 ppb
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.2 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.10 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.10 ppb

Violation Summary for Arsenic (total) in North Dakota

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average15