Know Your Environment. Protect Your Health.

Glyphosate

Polk City Water Supply

NOTE: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for glyphosate. Sample information shown below was taken by Des Moines Water Works.

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND30ND
2020ND10ND
2021ND20ND
2022ND30ND
2023ND10ND

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

NOTE: Polk City Water Supply purchases water from Des Moines Water Works which is required to test for glyphosate. Sample information shown below was taken by Des Moines Water Works.

Date Lab ID Result
2018-07-09OE680202ND
2018-07-16OE683859ND
2018-10-08OE724008ND
2019-07-09OE831885ND
2019-07-16OE835743ND
2019-08-21OE854920ND
2020-10-12OE1332018ND
2021-07-06OE1748365ND
2021-07-06OE1748381ND
2022-07-05OE2128016ND
2022-07-05OE2128018ND
2022-09-19OE2175664ND
2023-10-16OE2350834ND