Know Your Environment. Protect Your Health.

Simazine

City of Kennedale

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
2018ND40ND
2019ND70ND
2020ND40ND
20210.0160 ppb51ND - 0.0800 ppb
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
2018-01-09Q1800779007ND
2018-01-09Q1800779008ND
2018-01-09Q1800779009ND
2018-07-12Q1827622001ND
2021-04-07Q21089170010.0800 ppb
2021-04-07Q2108917002ND
2021-07-14Q2118520001ND
2021-07-14Q2118520002ND
2021-10-06Q2127556001ND
2022-01-20Q2202104001ND
2023-04-03Q2312006001ND
2023-07-13Q2327520005ND
2023-10-05Q2342787003ND