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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Combined Radium (-226 & -228)


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

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

 
Detected
Found above
health guidelines
Found above
legal limit
States
32
32
21
Water utilities
5,327
5,327
551
People Served
41,186,678
41,186,678
4,015,387

Health Concerns for Combined Radium (-226 & -228):


Combined Radium (-226 & -228) Exposure by State

Water utilities in 32 states have reported detecting Combined Radium (-226 & -228) in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Combined Radium (-226 & -228) contaminationWater suppliers reporting Combined Radium (-226 & -228) above health-based limits
SystemsPopulationSystemsPopulation
Illinois9187,893,3899187,893,389
New Jersey4897,287,7844897,287,784
California1695,947,2251695,947,225
Maryland1072,545,3491072,545,349
New York9472,418,2339472,418,233
Nevada522,231,453522,231,453
North Carolina3482,184,8813482,184,881
Arizona241,877,668241,877,668
Connecticut3301,175,2333301,175,233
Oregon461,046,550461,046,550
Alabama12985,37412985,374
Iowa324835,303324835,303
Wisconsin218832,430218832,430
New Mexico242776,018242776,018
Missouri257752,012257752,012
Idaho80531,68080531,680
Virginia19416,92419416,924
Rhode Island19345,38919345,389
New Hampshire338287,465338287,465
Utah8141,6368141,636
Wyoming65136,33065136,330
Montana9187,0429187,042
Kentucky386,524386,524
South Carolina1580,4261580,426
Indiana2680,0332680,033
North Dakota1663,5661663,566
Ohio4746,8674746,867
Washington2540,5682540,568
Vermont4526,5044526,504
Nebraska1612,1151612,115
Maine308,707308,707
Delaware16,00016,000
Total5,32741,186,6785,32741,186,678

The Most Polluted Communities

5,327 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
(Range)
1Castine Water Department
Castine, ME
1,0631 of 114.93 pCi/L
(14.93 pCi/L)
2Gurnee
Gurnee, IL
31,0001 of 114.7 pCi/L
(14.7 pCi/L)
3Wildwood Water Company
Old Lyme, CT
1321 of 114.3 pCi/L
(14.3 pCi/L)
4Villa Park
Villa Park, IL
22,5171 of 113.1 pCi/L
(13.1 pCi/L)
5Arlington Heights
Arlington Heights, IL
76,9431 of 112.6 pCi/L
(12.6 pCi/L)
6Newbury Crossing Condominium Assn, Inc
Southbury, CT
1323 of 312.32 pCi/L
(10.08 to 14.76 pCi/L)
7Grayslake
Grayslake, IL
20,3302 of 212.31 pCi/L
(10.8 to 13.82 pCi/L)
8Wycliff Meadows Subd
Pilot Knob, MO
1001 of 112.3 pCi/L
(12.3 pCi/L)
9Countryside Villa
Wade, NC
606 of 612.21 pCi/L
(10.32 to 14.5 pCi/L)
10Mount Prospect
Mt Prospect, IL
40,9041 of 112.1 pCi/L
(12.1 pCi/L)

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

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
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

Testing Summary for Combined Radium (-226 & -228)

Are tests routinely required for Combined Radium (-226 & -228) by federal law?Yes
Water suppliers reporting tests for Combined Radium (-226 & -228) (2004-2009):7,801 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.6 per year

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

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards for Combined Radium (-226 & -228) since 2004

Maximum Contaminant Level Exceedance Violations2,826
Monitoring Violations8,925
Reporting Violations6

Organ system toxicity (non-reproductive)

Type of concern: Reference:
Limited evidence of cardiovascular or blood toxicity National Library of Medicine HazMap



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
National Library of Medicine HazMapRADIUM•Anemia: Anemia, Aplastic;
•IARC Carcinogen - International Agency for Research on Cancer; classifies chemicals as established (1), probable (2a), or possible (2b) human carcinogens: Known Carcinogen;



references

government/industry list/academic study reference
National Library of Medicine HazMapNLM (National Library of Medicine). 2006. HazMap — Occupational Exposure to Hazardous Agents.

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