Know Your Environment. Protect Your Health.

Simazine

Falls Water Company Inc

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020N/A00N/A
2021ND50ND
2022ND40ND
2023ND40ND

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
2018-08-08SI80810801ND
2018-11-14SI81110401ND
2019-03-25SI90316701ND
2019-04-01SI90400501ND
2021-11-16SI11111703ND
2021-11-16SI11111704ND
2021-11-16SI11111705ND
2021-11-16SI11111701ND
2021-11-16SI11111702ND
2022-08-15SI20817502ND
2022-08-15SI20817503ND
2022-08-15SI20817504ND
2022-08-15SI20817505ND
2023-03-28SI30324001ND
2023-03-29SI30325201ND
2023-06-14SI30624701ND
2023-08-29SI30840803ND