The Power of Information

National Drinking Water Database

Combined Radium (-226 & -228) in Washington

Radium is a radioactive element usually found around uranium deposits. [read more]

The Most Polluted Communities in Washington

25 water utilities reported detecting Combined Radium (-226 & -228) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Combined Radium (-226 & -228) level

RankSystem Population Served Positive test results of total reported tests Average Level
1Whitworth Water District 2
Spokane, WA
25,7801 of 11.67 pCi/L
(1.67 pCi/L)
2Lewis River Golf Course
Woodland, WA
351 of 11.6 pCi/L
(1.6 pCi/L)
3City of Zillah
Zillah, WA
2,4721 of 11.42 pCi/L
(1.42 pCi/L)
4Benton City Water
Benton City, WA
2,1752 of 21.4 pCi/L
(1.4 pCi/L)
5Cro Farms Inc
Rock Island, WA
1501 of 11.22 pCi/L
(1.22 pCi/L)
6Irvin Water District #6
Spokane, WA
3,5691 of 11.19 pCi/L
(1.19 pCi/L)
7Stevens Co Pud - Chatteroy Springs West
Loon Lake, WA
751 of 11 pCi/L
(1 pCi/L)
8Jaw Farms Inc
Malott, WA
761 of 10.97 pCi/L
(0.97 pCi/L)
9Johnson Creek Water Users Assn
Riverside, WA
482 of 30.92 pCi/L
(0 to 1.77 pCi/L)
10Sunland Estates Homeowners Assn
Moses Lake, WA
1502 of 20.81 pCi/L
(0.69 to 0.93 pCi/L)

Health Based Limits for Combined Radium (-226 & -228)

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.5 pCi/L

Violation Summary for Combined Radium (-226 & -228) in Washington

There are no violations reported for this contaminant in Washington