Know Your Environment. Protect Your Health.

Simazine

Ruston Water System

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.

 

23

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
2019N/A00N/A
2020ND130ND
2021N/A00N/A
2022N/A00N/A
2023ND100ND

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
2020-01-0735523111001ND
2020-01-1335524733008ND
2020-01-1335524057001ND
2020-01-1335524733001ND
2020-01-1335524733002ND
2020-01-1335524733003ND
2020-01-1335524733004ND
2020-01-1335524733005ND
2020-01-1335524733006ND
2020-01-1335524733007ND
2020-06-2235558556001ND
2020-06-2235558556002ND
2020-12-0835597801001ND
2023-02-2735782669001ND
2023-02-2735782669002ND
2023-02-2735782669003ND
2023-02-2735782669004ND
2023-02-2735782669005ND
2023-03-0635784479001ND
2023-03-0635784479002ND
2023-03-0635784479003ND
2023-03-0635784479004ND
2023-03-0635784479005ND