Know Your Environment. Protect Your Health.

Simazine

Cottonwood Hills Estates

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
2018ND20ND
2019N/A00N/A
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
2018-02-13Q1805887005ND
2018-02-13Q1805887006ND
2021-03-16Q2106819001ND
2021-06-16Q2115846001ND
2021-08-18Q2122395001ND
2021-09-13Q2124824001ND
2021-12-08Q2134355001ND
2022-03-22AF91417ND
2022-06-06Q2215733001ND
2022-09-19Q2227946001ND
2022-11-28Q2235276001ND
2023-02-21Q2307018003ND
2023-05-08Q2317259001ND
2023-09-07Q2338617001ND
2023-12-04Q2351276002ND