The Power of Information

National Drinking Water Database

Combined Radium (-226 & -228) in Oregon

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

The Most Polluted Communities in Oregon

46 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
1Bear Creek Mobile Home Park
Central Point, OR
1201 of 12.4 pCi/L
(2.4 pCi/L)
2Redmond Water Department
Redmond, OR
17,4501 of 11.9 pCi/L
(1.9 pCi/L)
3Wisemans Mobile Court
Colfax, OR
1001 of 11.56 pCi/L
(1.56 pCi/L)
4Lakeshore Water District
Eugene, OR
1353 of 41.06 pCi/L
(0 to 3 pCi/L)
5Seaside Water Department
Seaside, OR
6,0001 of 11 pCi/L
(1 pCi/L)
6Wunder Mobile Park
Boring, OR
1001 of 21 pCi/L
(0 to 2 pCi/L)
7City of Spray
Spray, OR
1502 of 20.95 pCi/L
(0.9 to 1 pCi/L)
8Northridge Water Co
Shady Cove, OR
1501 of 10.9 pCi/L
(0.9 pCi/L)
9Portland Water Bureau
Portland, OR
539,2001 of 20.84 pCi/L
(0 to 1.67 pCi/L)
10City of Corvallis
Corvallis, OR
52,0001 of 10.76 pCi/L
(0.76 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 Oregon

There are no violations reported for this contaminant in Oregon