Know Your Environment. Protect Your Health.

Glyphosate

Quint-mar Water Authority

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.

 

24

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
2019ND100ND
2020ND20ND
2021N/A00N/A
2022ND100ND
2023ND20ND

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
2019-02-05AB32809ND
2019-02-05AB32810ND
2019-02-05AB32811ND
2019-02-05AB32808ND
2019-04-17AB34287ND
2019-07-17AB36908-1ND
2019-07-17AB36909ND
2019-07-17AB36910ND
2019-07-17AB36911ND
2019-07-17AB36912ND
2020-07-20AB43481ND
2020-11-05AB46358ND
2022-02-08AB56151ND
2022-02-08AB56155ND
2022-02-08AB56154ND
2022-02-08AB56153ND
2022-02-08AB56152ND
2022-07-20AB60396ND
2022-07-20AB60397ND
2022-07-20AB60398ND
2022-07-20AB60399ND
2022-07-20AB60400ND
2023-02-06AB65254ND
2023-07-17AB69865ND