Know Your Environment. Protect Your Health.

Simazine

Wallace, Town of

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
2019ND80ND
2020N/A00N/A
2021N/A00N/A
2022ND100ND
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
2019-08-1437729_19-34796ND
2019-08-1437729_19-34806ND
2019-08-1437729_19-34817ND
2019-08-1437729_19-34827ND
2019-08-1437729_19-34839ND
2019-08-1437729_19-34853ND
2019-08-1937729_19-35357ND
2019-09-1837729_19-40268ND
2022-10-0337729_22-47907ND
2022-10-0337729_22-47932ND
2022-10-0337729_22-47931ND
2022-10-0337729_22-47930ND
2022-10-0337729_22-47929ND
2022-10-0337729_22-47903ND
2022-11-3037729_22-58956ND
2022-11-3037729_22-58957ND
2022-11-3037729_22-58958ND
2022-11-3037729_22-58959ND