Know Your Environment. Protect Your Health.

Simazine

Correctional Training Facility - Soledad

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
2019ND40ND
2020N/A00N/A
2021ND20ND
2022ND10ND
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
2018-01-02CA2710850_006_006-201801020720ND
2018-04-02CA2710850_006_006-201804020900ND
2018-08-07CA2710850_005_005-201808070930ND
2019-08-06CA2710850_007_007-201908061025ND
2019-09-04CA2710850_005_005-201909040915ND
2019-11-05CA2710850_007_007-201911050815ND
2019-12-23CA2710850_005_005-201912230915ND
2021-01-05CA2710850_006_006-202101050900ND
2021-04-06CA2710850_006_006-202104061005ND
2022-08-31CA2710850_007_007-202208311000ND
2023-08-29CA2710850_005_005-202308291015ND
2023-12-27CA2710850_005_005-202312270930ND
2023-12-27CA2710850_006_006-202312270845ND