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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Alpha particle activity (excl radon and uranium)


Status: Regulated - EPA has established a maximum legal limit in tapwater for this contaminant.

Alpha particles are a form of radiation associated with radioactive mining waste pollutants and natural sources. [read more]

 
Detected
Found above
health guidelines
Found above
legal limit
States
37
37
28
Water utilities
5,027
5,027
453
People Served
43,431,908
43,431,908
2,819,680

Alpha particle activity (excl radon and uranium) Exposure by State

Water utilities in 37 states have reported detecting Alpha particle activity (excl radon and uranium) in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Alpha particle activity (excl radon and uranium) contaminationWater suppliers reporting Alpha particle activity (excl radon and uranium) above health-based limits
SystemsPopulationSystemsPopulation
Florida47112,830,00147112,830,001
New Jersey2984,849,6362984,849,636
Maryland1684,301,5611684,301,561
Arizona663,845,801663,845,801
Utah2012,242,7272012,242,727
Nevada542,171,306542,171,306
North Carolina3221,785,7153221,785,715
Illinois1981,690,5901981,690,590
Alabama741,511,363741,511,363
Wisconsin228844,350228844,350
New Mexico260729,872260729,872
Nebraska134718,206134718,206
Connecticut300705,543300705,543
Pennsylvania129636,221129636,221
Idaho84590,51884590,518
Maine224532,412224532,412
New York273523,558273523,558
New Hampshire477490,355477490,355
Oregon70344,30770344,307
Ohio139310,869139310,869
Indiana66253,77866253,778
South Dakota97216,11397216,113
Montana244206,586244206,586
Delaware1201,0001201,000
Kentucky17190,99517190,995
Wyoming78147,26878147,268
Rhode Island13114,45813114,458
Missouri59112,20659112,206
Vermont166108,640166108,640
California1105,3321105,332
South Carolina538,985538,985
Iowa2834,5802834,580
Texas3422,4173422,417
Virginia3416,9963416,996
North Dakota105,759105,759
West Virginia21,53621,536
Alaska23482348
Total5,02743,431,9085,02743,431,908

The Most Polluted Communities

5,027 water utilities reported detecting Alpha particle activity (excl radon and uranium) 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 (excl radon and uranium) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Williams Trailer Court
Odessa, TX
501 of 144.3 pCi/L
(44.3 pCi/L)
2Fossil Rock Recreation Area
IL
4381 of 144 pCi/L
(44 pCi/L)
3Utility Development & Research
Riviera, TX
6301 of 143.9 pCi/L
(43.9 pCi/L)
4Franklin Domestic Water Users
Boise, ID
751 of 143.3 pCi/L
(43.3 pCi/L)
5EL Rancho Mobile Home Park (Santa Fe)
Santa Fe, NM
501 of 143.3 pCi/L
(43.3 pCi/L)
6Valley View Mobile Home Park
Midland, TX
501 of 143.2 pCi/L
(43.2 pCi/L)
7Los Arboles Mhp
Las Cruces, NM
3301 of 141.5 pCi/L
(41.5 pCi/L)
8Country Lane Manor
Candia, NH
851 of 138.7 pCi/L
(38.7 pCi/L)
9Nichols Trailer Park
Shelburne, ME
752 of 238.65 pCi/L
(37.6 to 39.7 pCi/L)
10Wagon Wheel Tenant Coop
Londonderry, NH
882 of 237.35 pCi/L
(35 to 39.7 pCi/L)

Health Based Limits for Alpha particle activity (excl radon and uranium)

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 pCi/L
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.0.15 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
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.15 pCi/L

Testing Summary for Alpha particle activity (excl radon and uranium)

Are tests routinely required for Alpha particle activity (excl radon and uranium) by federal law?Yes
Water suppliers reporting tests for Alpha particle activity (excl radon and uranium) (2004-2009):8,017 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.5 per year

Violation Summary for Alpha particle activity (excl radon and uranium)

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards for Alpha particle activity (excl radon and uranium) since 2004

Maximum Contaminant Level Exceedance Violations1,177
Monitoring Violations9,247
Reporting Violations0