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EWG's Tap Water Database — 2021 UPDATE

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Atrazine

Village Water System

Atrazine is a herbicide commonly detected in drinking water that comes from cornfield and other agricultural runoff. It is a hormone disrupter that harms the male and female reproductive systems of people and wildlife. Read More.

Federal laws allow up to 3 parts per billion of atrazine in treated tap water. Water suppliers average atrazine measurements collected over a year, which means that the reported values underestimate intense spikes of elevated exposures during the periods in late spring and early summer when atrazine is applied in large amounts on farm fields.

Human epidemiological studies suggest that federal standards for atrazine are insufficient to protect public health. In 1999 the California Office of Environmental Health Hazard Assessment set a public health goal of 0.15 parts per billion for atrazine in drinking water, based on a study finding increased rates of breast cancer in rats exposed to the chemical. California’s legal maximum for atrazine in tap water is 1 ppb.

Click here to read more about atrazine.

MORE ABOUT THIS CONTAMINANT

 

72

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016ND360ND
2017N/A00N/A
2018N/A00N/A
2019ND360ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for atrazine was defined by EWG based on epidemiological studies of human exposure to atrazine in drinking water.. This health guideline protects against harm to the developing fetus, harm to the reproductive system and hormone disruption.

EPA Maximum Contaminant
Level (MCL) 3 ppb

The legal limit for atrazine, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s. This limit does not fully protect against harm to the reproductive system, harm to the developing fetus, and hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2016-04-2035240730008ND
2016-04-2035240730008ND
2016-04-2035240730007ND
2016-04-2035240730006ND
2016-04-2035240730005ND
2016-04-2035240730004ND
2016-04-2035240730003ND
2016-04-2035240730002ND
2016-04-2035240730001ND
2016-04-2035240730001ND
2016-04-2035240730002ND
2016-04-2035240730003ND
2016-04-2035240730004ND
2016-04-2035240730005ND
2016-04-2035240730006ND
2016-04-2035240730007ND
2016-04-2635241518009ND
2016-04-2635241518010ND
2016-04-2635241518009ND
2016-04-2635241518008ND
2016-04-2635241518007ND
2016-04-2635241518006ND
2016-04-2635241518005ND
2016-04-2635241518004ND
2016-04-2635241518003ND
2016-04-2635241518002ND
2016-04-2635241518001ND
2016-04-2635241518001ND
2016-04-2635241518010ND
2016-04-2635241518002ND
2016-04-2635241518003ND
2016-04-2635241518004ND
2016-04-2635241518005ND
2016-04-2635241518006ND
2016-04-2635241518007ND
2016-04-2635241518008ND
2019-02-1135447880007ND
2019-02-1135447880006ND
2019-02-1135447880005ND
2019-02-1135447880004ND
2019-02-1135447880003ND
2019-02-1135447880002ND
2019-02-1135447880001ND
2019-02-1135447880008ND
2019-02-1135447880001ND
2019-02-1135447880002ND
2019-02-1135447880003ND
2019-02-1135447880004ND
2019-02-1135447880005ND
2019-02-1135447880006ND
2019-02-1135447880007ND
2019-02-1135447880008ND
2019-03-2535457558001ND
2019-03-2535457558009ND
2019-03-2535457558002ND
2019-03-2535457558003ND
2019-03-2535457558004ND
2019-03-2535457558005ND
2019-03-2535457558006ND
2019-03-2535457558007ND
2019-03-2535457558008ND
2019-03-2535457558009ND
2019-03-2535457558001ND
2019-03-2535457558002ND
2019-03-2535457558003ND
2019-03-2535457558004ND
2019-03-2535457558005ND
2019-03-2535457558006ND
2019-03-2535457558007ND
2019-03-2535457558008ND
2019-04-0135458991001ND
2019-04-0135458991001ND