Know Your Environment. Protect Your Health.

Simazine

City of Pocatello

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND160ND
2020ND170ND
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

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
2018-05-02SI80502301ND
2019-10-08SI91008801ND
2019-10-08SI91009208ND
2019-10-08SI91009207ND
2019-10-08SI91009206ND
2019-10-08SI91009205ND
2019-10-08SI91009204ND
2019-10-08SI91009203ND
2019-10-08SI91009202ND
2019-10-08SI91009201ND
2019-10-08SI91008808ND
2019-10-08SI91008807ND
2019-10-08SI91008806ND
2019-10-08SI91008805ND
2019-10-08SI91008804ND
2019-10-08SI91008803ND
2019-10-08SI91008802ND
2020-05-11SI00507316ND
2020-05-11SI00507315ND
2020-05-11SI00507314ND
2020-05-11SI00507313ND
2020-05-11SI00507312ND
2020-05-11SI00507311ND
2020-05-11SI00507310ND
2020-05-11SI00507309ND
2020-05-11SI00507308ND
2020-05-11SI00507307ND
2020-05-11SI00507306ND
2020-05-11SI00507305ND
2020-05-11SI00507304ND
2020-05-11SI00507303ND
2020-05-11SI00507302ND
2020-05-11SI00507301ND
2020-06-09SI00614401ND