Know Your Environment. Protect Your Health.

Simazine

Wood River Valley Mobile Home Park

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND50ND
2020ND40ND
2021ND50ND
2022ND30ND
2023ND20ND

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
2018-01-16531834ND
2018-03-21540107ND
2018-04-10543658ND
2018-07-16560979ND
2018-10-30577038ND
2019-02-13596562ND
2019-04-15602874ND
2019-07-29621133ND
2019-10-15638569ND
2019-11-25648426ND
2020-01-28650689ND
2020-04-27667188ND
2020-08-24693191ND
2020-11-24708267ND
2021-01-27712752ND
2021-02-23722156ND
2021-04-07727300ND
2021-07-12745694ND
2021-10-13764236ND
2022-01-11778740ND
2022-04-12791736ND
2022-10-05828246ND
2023-01-10842493ND
2023-04-03855434ND