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EWG's Tap Water Database — 2019 UPDATE

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Atrazine

United Wappinger Water Improvement District

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND100ND
2014ND130ND
2015N/A00N/A
2016ND60ND
2017ND50ND

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
2013-06-05AT13975ND
2013-06-05AT13978ND
2013-06-05MB13986ND
2013-06-05AT13975ND
2013-06-05HT13979ND
2013-06-05HT13980ND
2013-06-05AT13977ND
2013-06-05AT13976ND
2013-06-05MB13983ND
2013-06-12AT11021ND
2014-12-0912101426CND
2014-12-0912101426-W4ND
2014-12-0912101426HND
2014-12-0912101426-W6ND
2014-12-0912101426ND
2014-12-0912101426-W5ND
2014-12-0912101426-W3ND
2014-12-0912101427CND
2014-12-0912101427ND
2014-12-0912101427AND
2014-12-0912101426AND
2014-12-0912101426END
2014-12-0912101426-W1ND
2016-07-12UW161554ND
2016-07-12UW161556ND
2016-07-12UW161555ND
2016-07-12UW161553ND
2016-07-12UW161551ND
2016-07-12UW161552ND
2017-11-28UW172963SND
2017-11-28UW172958KND
2017-11-28UW172959KND
2017-11-28UW172961SND
2017-11-28UW172962SND