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EWG's Tap Water Database — 2019 UPDATE

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Glyphosate

City of Buckeye Sonora - Sundance

Glyphosate is the weedkiller marketed as Roundup. The state of California classifies glyphosate as a chemical known to cause cancer. Read More.

Glyphosate is classified as a probable human carcinogen by the International Agency for Research on Cancer and has been linked to increased risk of non-Hodgkin’s lymphoma in people. Exposure to glyphosate during pregnancy may affect fetal development.

 

14

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
2013N/A00N/A
2014ND60ND
2015ND20ND
2016ND20ND
2017ND40ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 5 ppb

The EWG Health Guideline of 5 ppb for glyphosate was defined by EWG as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

EPA Maximum Contaminant
Level (MCL) 700 ppb

The legal limit for glyphosate, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s. This limit does not account for the cancer risks of glyphosate and does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2014-05-07484777-001AND
2014-05-07484934-001AND
2014-09-04492627-001CND
2014-09-04492628-001CND
2014-10-23495554-001BND
2014-10-29496126-001BND
2015-03-12503711-001ND
2015-03-12503712-001ND
2016-02-23525398-001BND
2016-02-24525405-001BND
2017-04-13550767-001ND
2017-04-27551845-001AND
2017-09-27563905-001BND
2017-09-27563906-001BND