Know Your Environment. Protect Your Health.

Simazine

City of Jersey Village

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)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0300 ppb31ND - 0.0900 ppb
2019ND10ND
20200.110 ppb110.110 ppb
20210.0320 ppb52ND - 0.0800 ppb
20220.0800 ppb220.0800 ppb
20230.0550 ppb21ND - 0.110 ppb

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
2018-03-12AE180110.0900 ppb
2018-07-20AE34225ND
2018-07-20AE34226ND
2019-01-29AE52032ND
2020-02-04AE969070.110 ppb
2021-01-27AF414040.0800 ppb
2021-01-27AF41405ND
2021-01-27AF414060.0800 ppb
2021-04-29AF52007ND
2021-08-04AF64897ND
2022-01-13Q22015010010.0800 ppb
2022-01-13Q22015010020.0800 ppb
2023-02-28AG309010.110 ppb
2023-08-22AG53571ND