Know Your Environment. Protect Your Health.

Simazine

Jefferson Parish

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.

 

47

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.1000 ppb131ND - 0.200 ppb
20190.1000 ppb131ND - 0.200 ppb
2020ND60ND
20210.0527 ppb63ND - 0.110 ppb
20220.0567 ppb63ND - 0.150 ppb
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
2018-03-1535380393001ND
2018-03-1535380393003ND
2018-03-1535380393002ND
2018-03-1535380393003ND
2018-03-1535380393002ND
2018-03-1535380393001ND
2018-06-010.1000 ppb*
2018-08-1535411635002ND
2018-08-1535411635003ND
2018-08-1535411635001ND
2018-08-1535411635003ND
2018-08-1535411635001ND
2018-08-1535411635002ND
2019-02-2735451094001ND
2019-02-2735451093001ND
2019-02-2735451088001ND
2019-02-2735451088001ND
2019-02-2735451093001ND
2019-02-2735451094001ND
2019-06-010.1000 ppb*
2019-08-0135486656001ND
2019-08-0135486654001ND
2019-08-0135486656001ND
2019-08-0135486659001ND
2019-08-0135486659001ND
2019-08-0135486654001ND
2020-03-2635540013001ND
2020-03-2635540015001ND
2020-03-2635540021001ND
2020-10-0835583706001ND
2020-10-0835583707001ND
2020-10-0835583709001ND
2021-01-28356080800010.110 ppb
2021-01-28356080820010.110 ppb
2021-01-28356080860010.0960 ppb
2021-10-1435671096001ND
2021-10-1435671098001ND
2021-10-1435671095001ND
2022-01-25356929890010.0940 ppb
2022-01-25356929900010.150 ppb
2022-01-25356929910010.0960 ppb
2022-07-2735735694001ND
2022-07-2735735695001ND
2022-07-2735735696001ND
2023-01-1135772258001ND
2023-01-1135772259001ND
2023-01-1135772260001ND

* Sample result is taken from the system's CCR report.