Know Your Environment. Protect Your Health.

Simazine

Town of Hampstead

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
2018ND60ND
2019N/A00N/A
2020ND10ND
2021ND80ND
2022ND20ND
2023N/A00N/A

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
2018-10-02E19001152003ND
2018-10-02E19001152005ND
2018-10-02E19001152007ND
2018-10-02E19001152009ND
2018-10-02E19001152011ND
2018-10-02E19001152001ND
2020-07-29E21000293001ND
2021-01-31E21001849001ND
2021-04-08E22000815006ND
2021-06-03E21003569001ND
2021-06-03E21003570001ND
2021-09-08E22000815001ND
2021-09-08E22000815011ND
2021-09-08E22000815016ND
2021-09-08E22000815021ND
2022-05-25E2201063601ND
2022-08-03E2300023805ND