Know Your Environment. Protect Your Health.

Simazine

Bayou La Batre Utilities

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND50ND
2019ND10ND
2020ND50ND
2021ND40ND
2022ND50ND
2023ND50ND

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
2018-01-29180129039-2ND
2018-01-29180129039-1ND
2018-05-07180509028-1ND
2018-05-07180509028-2ND
2018-06-13180614041-1SND
2019-11-2120131445002_ISOCND
2020-03-1620146809002ND
2020-05-0720153536001ND
2020-07-1420162712001ND
2020-10-2220176839001_ISOCND
2020-11-1220179687001_S525ND
2021-03-1020193059001_ISOCND
2021-04-2720197805001ND
2021-07-2220215372001ND
2021-11-1820226391001_ISOCND
2022-03-0720236841001_ISOCND
2022-03-0720236842001_ISOCND
2022-05-2520244818002_ISOCND
2022-09-1220255358001_ISOCND
2022-10-1920258987001_ISOCND
2023-02-0720269193001_ISOCND
2023-02-1520269913001_ISOCND
2023-04-1120274431001_ISOCND
2023-07-1320282549001_ISOCND
2023-10-1720293432001_ISOCND