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EWG's Tap Water Database

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Glyphosate

Forrest City Waterworks

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND40ND
2011ND20ND
2012N/A00N/A
2013ND40ND
2014ND20ND
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 5 ppb

The 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 700 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)700 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-07-2810210006205ND
2010-07-2810210006105ND
2010-11-1610321000905ND
2010-11-1610321000805ND
2011-05-2511146008005ND
2011-08-0311216000105ND
2013-08-2713241000205ND
2013-08-2713241000305ND
2013-11-0513310000905ND
2013-11-0513310000805ND
2014-04-2314114013805ND
2014-08-2714240000605ND