Know Your Environment. Protect Your Health.

Simazine

Eol Water Supply Corporation

Simazine is a hormone-disrupting herbicide related to atrazine. It affects the male and female reproductive systems. In studies of laboratory animals, simazine increases blood levels of estrogen, decreases prolactin and progesterone, and causes mammary and ovarian tumors.

 

15

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
2019ND20ND
2020ND20ND
2021ND10ND
2022ND50ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for simazine was defined by EWG based on epidemiological studies of human exposure to atrazine in drinking water. This health guideline protects against harm to the developing fetus, harm to the reproductive system and hormone disruption.

EPA Maximum Contaminant
Level (MCL): 4 ppb

The legal limit for simazine, established in 1992, was based on toxicity studies in laboratory animals conducted in the 1980s. This limit does not fully protect against harm to the reproductive system, harm to the developing fetus, and hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2019-05-13AE66042ND
2019-05-13AE66043ND
2020-02-24AE99605ND
2020-04-13AF06414ND
2021-06-02AF56337ND
2022-01-25AF81752ND
2022-01-25AF81763ND
2022-04-06AF92293ND
2022-07-06AG03351ND
2022-11-22AG19717ND
2023-03-06AG31541ND
2023-06-05AG43102ND
2023-06-05AG43103ND
2023-08-21AG53203ND
2023-11-20AG64242ND