Know Your Environment. Protect Your Health.

Simazine

West Baton Rouge Water Works District 2

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.

 

14

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
2020ND20ND
2021ND30ND
2022ND20ND
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
2019-06-1835476846005ND
2019-06-1835476846005ND
2019-07-2435484677005ND
2019-07-2435484677005ND
2019-10-0835504152001ND
2019-10-0835504152001ND
2020-01-1535524566004ND
2020-11-1035591333001ND
2021-02-0435609851001ND
2021-05-1835634927001ND
2021-09-2035665075002ND
2022-06-2135727308001ND
2022-10-1735754574001ND
2023-01-1035772224001ND