Know Your Environment. Protect Your Health.

Simazine

Town of Annetta Deer Creek

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND60ND
2020ND30ND
2021ND20ND
2022ND60ND
2023ND10ND

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
2019-06-03Q1930677020ND
2019-06-03Q1930677021ND
2019-06-03Q1930677022ND
2019-06-03Q1930677023ND
2019-06-03Q1930677024ND
2019-06-03Q1930677019ND
2020-04-21Q2015803011ND
2020-08-27Q2034434011ND
2020-10-14Q2040327005ND
2021-02-01Q2102857001ND
2021-04-22Q2110415001ND
2022-02-07Q2204015001ND
2022-03-10Q2208362001ND
2022-11-17Q2234711016ND
2022-11-17Q2234711017ND
2022-11-17Q2234711018ND
2022-11-17Q2234711019ND
2023-11-08Q2348107023ND