Know Your Environment. Protect Your Health.

Simazine

City of Chandler

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2018-05-31Q1821776004ND
2018-05-31Q1821776003ND
2018-10-15Q1840931007ND
2018-10-15Q1840931008ND
2018-10-15Q1840931009ND
2019-03-19Q1911348002ND
2019-03-19Q1911348014ND
2019-09-11Q1963871005ND
2020-03-24Q2012436013ND
2020-03-24Q2012436014ND
2020-06-23Q2025085011ND
2021-05-04Q2111316001ND
2021-05-04Q2111316004ND
2021-05-04Q2111316003ND
2021-05-04Q2111316002ND
2021-12-15Q2135508001ND
2022-03-31Q2210090001ND
2022-03-31Q2210090002ND
2022-03-31Q2210090003ND
2023-01-12Q2301951012ND
2023-01-12Q2301951022ND
2023-10-02Q2342088008ND