The Power of Information

National Drinking Water Database

Alpha particle activity in Nevada

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

The Most Polluted Communities in Nevada

3 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
1Silver Peak Water System
Goldfield, NV
1382 of 213.66 pCi/L
(12.02 to 15.3 pCi/L)
2Sunrise Estates Water System
Reno, NV
861 of 11.57 pCi/L
(1.57 pCi/L)
3Old Washoe Estates Wcud
Reno, NV
1281 of 11.23 pCi/L
(1.23 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 Nevada

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

Violation TypeNumber of Violations
Failure to monitor regularly1