Know Your Environment. Protect Your Health.

Glyphosate

St Charles Water District 1 East Bank

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND80ND
2020ND40ND
2021ND40ND
2022ND50ND
2023ND40ND

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
2018-01-2335370117001ND
2018-01-2335370117001ND
2018-07-1735405500001ND
2018-07-1735405500001ND
2019-01-2235444037001ND
2019-01-2235444038001ND
2019-01-2235444037001ND
2019-01-2235444038001ND
2019-07-2535485229002ND
2019-07-2535485229001ND
2019-07-2535485229002ND
2019-07-2535485229001ND
2020-03-0535535509001ND
2020-03-0535535509002ND
2020-11-1035591297001ND
2020-11-1035591292001ND
2021-01-2835608065001ND
2021-01-2835608065002ND
2021-10-2535673766001ND
2021-10-2535673766002ND
2022-02-0235694868001ND
2022-02-0235694870001ND
2022-08-2435742576001ND
2022-08-2435742579001ND
2022-08-2435742769001ND
2023-03-2035787602001ND
2023-03-2035787604001ND
2023-11-2835844322001ND
2023-11-2835844330001ND