Know Your Environment. Protect Your Health.

Simazine

Jackson Water Supply Corporation

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND30ND
2020ND30ND
2021ND40ND
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
2018-12-05Q1849735009ND
2018-12-05Q1849735016ND
2018-12-05Q1849735017ND
2018-12-05Q1849735008ND
2019-06-04Q1931259001ND
2019-06-04Q1931259002ND
2019-06-04Q1931259003ND
2020-08-19Q2033205010ND
2020-08-19Q2033205011ND
2020-08-19Q2033205012ND
2021-01-20Q2101457001ND
2021-01-20Q2101457003ND
2021-01-20Q2101457002ND
2021-10-21Q2129820001ND
2022-07-25Q2220978001ND
2022-07-25Q2220978002ND
2022-07-25Q2220978005ND
2023-10-11Q2343424014ND
2023-10-11Q2343424015ND
2023-10-11Q2343424016ND