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EWG's Tap Water Database — 2019 UPDATE

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Glyphosate

Prescott Valley WD Upper

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND140ND
2014N/A00N/A
2015N/A00N/A
2016ND200ND
2017N/A00N/A

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
2012-03-15201203160214SND
2012-07-25201207260390SND
2012-11-262111802-01SND
2013-02-14201302150336SBND
2013-02-14201302150336SAND
2013-02-14201302150336SCND
2013-02-14201302150336SDND
2013-02-14201302150336SEND
2013-02-14201302190142SAND
2013-02-14201302190142SBND
2013-07-25201307250265SCND
2013-07-25201307250265SBND
2013-07-25201307250265SAND
2013-07-25201307250263SDND
2013-07-25201307250263SCND
2013-07-25201307250263SBND
2013-07-25201307250263SAND
2016-02-09201602100059SBND
2016-02-09201602100059SCND
2016-02-09201602100059SAND
2016-02-10201602110043SCND
2016-02-10201602110043SBND
2016-02-10201602110043SAND
2016-02-10201602110037SDND
2016-02-10201602110037SCND
2016-02-10201602110037SBND
2016-02-10201602110037SAND
2016-08-03201608040057SEND
2016-08-03201608040057SAND
2016-08-03201608040057SBND
2016-08-03201608040057SCND
2016-08-03201608040057SDND
2016-08-04201608050126SAND
2016-08-04201608050126SEND
2016-08-04201608050126SDND
2016-08-04201608050126SCND
2016-08-04201608050126SBND