The Power of Information

National Drinking Water Database

Atrazine in Indiana

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 Indiana

28 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
1Logansport Mun.utility-Sw Treatment Plnt
Logansport, IN
12,8618 of 170.82 ppb
(0 to 7 ppb)
2Springs Valley Regional Water District
West Baden, IN
3,5105 of 130.71 ppb
(0 to 4.4 ppb)
3Mitchell Water Department
Mitchell, IN
4,8003 of 190.7 ppb
(0 to 6.85 ppb)
4Winslow Water Works
Winslow, IN
8815 of 150.65 ppb
(0 to 5 ppb)
5Versailles Water Works
Versailles, IN
1,7846 of 190.55 ppb
(0 to 7.09 ppb)
6Muscatatuck Urban Training Center
Butlerville, IN
1149 of 150.54 ppb
(0 to 2.4 ppb)
7North Vernon Water Department
North Vernon, IN
6,5001 of 150.5 ppb
(0 to 7.55 ppb)
8Stucker Fork Water Utility
Austin, IN
14,0007 of 220.45 ppb
(0 to 3.2 ppb)
9Bedford City Utilities
Bedford, IN
14,00019 of 380.45 ppb
(0 to 4.6 ppb)
10Westport Water Company
Westport, IN
1,60021 of 220.39 ppb
(0 to 1.4 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 Indiana

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

Violation TypeNumber of Violations
Failure to monitor regularly52
Over maximum contaminant level, Single Sample1
Over maximum contaminant level, Average1