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National Drinking Water Database


Arsenic (total) in Arkansas


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 Arkansas

13 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)
1Tall Oaks Mhp
Mountain Home, AR
3722 of 226.81 ppb
(2 to 23.8 ppb)
2Kings Hill Estates
Berryville, AR
252 of 24.5 ppb
(4.3 to 4.7 ppb)
3Bedford Falls Mhp
Green Forrest, AR
254 of 52.52 ppb
(0 to 4.3 ppb)
4Ashdown Waterworks
Ashdown, AR
4,53812 of 132.22 ppb
(0 to 3.2 ppb)
5Cabot Waterworks
Cabot, AR
20,0232 of 31.8 ppb
(0 to 3.3 ppb)
6Maumelle Water Management
Maumelle, AR
15,6001 of 21 ppb
(0 to 2 ppb)
7Calico Rock Waterworks
Calico Rock, AR
1,7663 of 50.9 ppb
(0 to 2.7 ppb)
8Grand Prairie Bayou 2 Pfb
Austin, AR
8,5771 of 40.85 ppb
(0 to 3.4 ppb)
9S P G Water Association
St Joe, AR
1,3741 of 30.7 ppb
(0 to 2.1 ppb)
10Bergman Waterworks
Bergman, AR
1,8342 of 70.66 ppb
(0 to 2.4 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 Arkansas

There are no violations reported for this contaminant in Arkansas