Know Your Environment. Protect Your Health.

Glyphosate

Connecticut Water Company - Northern Region-Western System

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND20ND
2020N/A00N/A
2021N/A00N/A
2022ND150ND
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
2018-01-31BZ82950SOC5ND
2018-06-28CA80715SOC5ND
2018-07-26CA99050ND
2019-01-09SOC 200518249ND
2019-03-11SOC 200524185ND
2022-01-31CK26558ND
2022-02-28CK76167ND
2022-04-18CL11075ND
2022-08-26CM16197ND
2022-08-26CM16200ND
2022-09-07CM25593ND
2022-09-08CM25670ND
2022-09-20CM37292ND
2022-09-20CM37296ND
2022-10-04CM49624ND
2022-10-04CM49621ND
2022-10-06CM51510ND
2022-10-06CM51504ND
2022-10-06CM50872ND
2022-11-03CM76536ND