Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Glyphosate

St. Louis City

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.

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND80ND
2014ND80ND
2015ND60ND
2016ND60ND
2017ND60ND

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
2012-03-14CRCW031412M547ND
2012-03-14HBCB031412M547ND
2012-06-28CRCW062812M547ND
2012-06-28HBCB062812M547ND
2012-08-23HBCB082312M547ND
2012-08-23CRCW082312M547ND
2012-11-19CRCW111912M547ND
2012-11-19HBCB111912M547ND
2013-02-22CRCW022213M547ND
2013-02-22HBCB022213M547ND
2013-06-24HBCB062413M547ND
2013-06-24CRCW062413M547ND
2013-08-26CRCW082613M547ND
2013-08-26HBCB082613M547ND
2013-10-21CRCW102113M547ND
2013-10-21HBCB102113M547ND
2014-02-27HBCB022714M547ND
2014-02-27CRCW022714M547ND
2014-06-23CRCW062314M547ND
2014-06-23HBCB062314M547ND
2014-08-19HBCB081914M547ND
2014-08-19CRCW081914M547ND
2014-11-18CRCW111814M547ND
2014-11-18HBCB111814M547ND
2015-02-25HBCB022515M547ND
2015-02-25CRCW022515M547ND
2015-09-21HBCB091215M547ND
2015-09-21CRCW092115M547ND
2015-11-20HBCB112015M547ND
2015-11-20CRCW112015M547ND
2016-03-15HBCB031516M547ND
2016-03-15CRCW031516M547ND
2016-05-12HBCB051216M547ND
2016-05-12CRCW051216M547ND
2016-07-21CRCW072116M547ND
2016-07-21HBCB072116M547ND
2017-01-23CRCW012317M547ND
2017-01-23HBCB012317M547ND
2017-08-28CRCW082817M547ND
2017-08-28HBCB082817M547ND
2017-12-28HBCB122817M547ND
2017-12-28CRCW122817M547ND