The Power of Information

National Drinking Water Database

Atrazine in Illinois

Atrazine is an endocrine-disrupting herbicide used on corn, sugarcane and sorghum; it is associated with adverse reproductive effects and toxicity to the immune system. [read more]

The Most Polluted Communities in Illinois

59 water utilities reported detecting Atrazine in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Atrazine level

RankSystem Population Served Positive test results of total reported tests Average Level
Evansville, IL
74013 of 311.06 ppb
(0 to 8 ppb)
2Mount Olive
Mount Olive, IL
2,15013 of 190.74 ppb
(0 to 2 ppb)
3Kaskaskia Water District
New Athens, IL
18 of 220.58 ppb
(0 to 4.2 ppb)
Farina, IL
60015 of 270.53 ppb
(0 to 2.55 ppb)
Staunton, IL
5,28111 of 210.48 ppb
(0 to 3.1 ppb)
Waverly, IL
1,34611 of 210.48 ppb
(0 to 1.8 ppb)
Mattoon, IL
19,0003 of 210.43 ppb
(0 to 6.4 ppb)
8Vienna Correctional Center
Vienna, IL
3,4629 of 210.43 ppb
(0 to 2.1 ppb)
Centralia, IL
14,2748 of 220.41 ppb
(0 to 3 ppb)
10S L M Water Commission
Mascoutah, IL
30010 of 210.39 ppb
(0 to 2.3 ppb)

Health Based Limits for Atrazine

California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.0.15 ppb
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.3 ppb
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.3 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.700 ppb

Violation Summary for Atrazine 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
Failure to monitor regularly27
Over maximum contaminant level, Average5