Know Your Environment. Protect Your Health.

Simazine

Myoma Dunes Mutual Water Company

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND10ND
2021N/A00N/A
2022ND40ND
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
2018-11-19CA3310051_008_008-201811191033ND
2018-11-19CA3310051_007_007-201811191011ND
2019-11-18CA3310051_011_011-201911180951ND
2019-11-22CA3310051_010_010-201911220939ND
2020-08-24CA3310051_009_009-202008241030ND
2022-08-30CA3310051_007_007-202208300810ND
2022-08-30CA3310051_008_008-202208300857ND
2022-12-09CA3310051_011_011-202212090700ND
2022-12-09CA3310051_010_010-202212090600ND
2023-08-22CA3310051_009_009-202308220650ND