Know Your Environment. Protect Your Health.

Glyphosate

City of Caldwell

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND90ND
2020N/A00N/A
2021ND50ND
2022ND120ND
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2019-08-06S1938597ND
2019-08-06S1938599ND
2019-08-06S1938601ND
2019-08-06S1938594ND
2019-08-06S1938591ND
2019-08-06S1938593ND
2019-08-19S1941181ND
2019-08-19S1941172ND
2019-08-19S1941179ND
2021-06-30S2132702ND
2021-10-28S2158342ND
2021-10-28S2158341ND
2021-10-28S2158343ND
2021-11-15S2162154ND
2022-06-29S2231081ND
2022-07-06S2231994ND
2022-07-06S2231993ND
2022-07-06S2232001ND
2022-07-13S2233509ND
2022-10-12S2251056ND
2022-10-12S2251055ND
2022-10-12S2251041ND
2022-10-12S2251030ND
2022-10-19S2252265ND
2022-10-19S2252264ND
2022-10-19S2252266ND