The Power of Information

National Drinking Water Database

Alpha particle activity in Arkansas

Alpha particles are a form of radiation released from mining waste pollutants and natural sources. [read more]

The Most Polluted Communities in Arkansas

160 water utilities reported detecting Alpha particle activity in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Alpha particle activity level

RankSystem Population Served Positive test results of total reported tests Average Level
1South Mountain Water Assn
Marshall, AR
44020 of 208.42 pCi/L
(4.8 to 17 pCi/L)
2Sdm Water Association
Marshall, AR
37321 of 218.37 pCi/L
(4.7 to 16 pCi/L)
3MT Sherman Water Association
Jasper, AR
73221 of 217.02 pCi/L
(4.6 to 12 pCi/L)
4Big Flat Waterworks
Big Flat, AR
52317 of 176.64 pCi/L
(4.2 to 10 pCi/L)
5Diamond City Water
Diamond City, AR
1,39020 of 216.26 pCi/L
(0 to 13 pCi/L)
6Holiday Island Waterworks
Eureka Springs, AR
3,45323 of 235.96 pCi/L
(1.1 to 9.83 pCi/L)
7Mockingbird Hill Water Assoc
Jasper, AR
69323 of 235.82 pCi/L
(2.2 to 8.9 pCi/L)
8Lead Hill Waterworks
Lead Hill, AR
48222 of 225.59 pCi/L
(2.1 to 13 pCi/L)
9Valley Springs Waterworks
Valley Springs, AR
2,95025 of 255.45 pCi/L
(2.03 to 13.5 pCi/L)
10East Newton County Water Assn
Vendor, AR
1,52822 of 225.37 pCi/L
(1.25 to 10 pCi/L)

Health Based Limits for Alpha particle activity

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 pCi/L
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.15 pCi/L

Violation Summary for Alpha particle activity in Arkansas

There are no violations reported for this contaminant in Arkansas