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EWG's Tap Water Database — 2021 UPDATE

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Glyphosate

City of Nampa

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.

MORE ABOUT THIS CONTAMINANT

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND70ND
2017ND50ND
2018ND10ND
2019ND120ND

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
2016-04-20S1616221ND
2016-07-20S1632285ND
2016-10-07S1646180ND
2016-11-171652977ND
2016-11-17S1652977ND
2016-11-17S1652993ND
2016-11-17S1652982ND
2017-01-31S1703805ND
2017-01-31S1703804ND
2017-04-11S1714411ND
2017-08-09S1735777ND
2017-10-18S1748770ND
2018-10-08S1850028ND
2019-08-15S1940600ND
2019-08-15S1940599ND
2019-09-17S1946663ND
2019-09-17S1946664ND
2019-09-17S1946665ND
2019-09-17S1946666ND
2019-09-17S1946661ND
2019-09-18S1947017ND
2019-09-18S1947010ND
2019-09-18S1947008ND
2019-09-18S1947009ND
2019-09-18S1947007ND