The Power of Information

National Drinking Water Database

Alpha particle activity in Illinois

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

The Most Polluted Communities in Illinois

812 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
1Fossil Rock Recreation Area
4382 of 243.15 pCi/L
(41.4 to 44.9 pCi/L)
Gurnee, IL
31,0005 of 530.5 pCi/L
(13 to 43.5 pCi/L)
3Edelstein Water Coop
Edelstein, IL
12515 of 1528.23 pCi/L
(17.1 to 43.6 pCi/L)
Biggsville, IL
35020 of 2024.62 pCi/L
(1.35 to 42.7 pCi/L)
5Kingston Mines
Kingston Mines, IL
25918 of 1923.53 pCi/L
(0 to 43 pCi/L)
Glasford, IL
1,07625 of 2522.88 pCi/L
(1.88 to 39 pCi/L)
Macomb, IL
11,8403 of 322.78 pCi/L
(2 to 45 pCi/L)
8Arlington Heights
Arlington Heights, IL
76,9434 of 421.9 pCi/L
(8.33 to 38 pCi/L)
Neponset, IL
51921 of 2120.18 pCi/L
(10.2 to 39.4 pCi/L)
10IL American-Fernway
Creve Coeur, IL
5,9491 of 119.2 pCi/L
(19.2 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 Illinois

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

Violation TypeNumber of Violations
Over maximum contaminant level, Average150
Failure to monitor regularly82