Know Your Environment. Protect Your Health.

Simazine

City of Alvarado

NOTE: City of Alvarado purchases water from Johnson County SUD which is required to test for simazine. Sample information shown below was taken by Johnson County SUD.

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND10ND
2020ND10ND
2021ND80ND
2022ND70ND
2023ND20ND

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

NOTE: City of Alvarado purchases water from Johnson County SUD which is required to test for simazine. Sample information shown below was taken by Johnson County SUD.

Date Lab ID Result
2018-02-21Q1807323008ND
2018-02-21Q1807323003ND
2018-12-10Q1850236024ND
2018-12-10Q1850236025ND
2018-12-10Q1850236026ND
2018-12-10Q1850236027ND
2018-12-10Q1850236028ND
2018-12-10Q1850236029ND
2019-02-20Q1907529021ND
2019-02-20Q1907529028ND
2019-02-20Q1907529008ND
2019-02-20Q1907529001ND
2019-05-21Q1927429007ND
2020-01-28Q2003074035ND
2020-05-05Q2017189006ND
2020-10-07Q2039319012ND
2021-03-04Q2105758001ND
2021-03-31Q2108142001ND
2021-03-31Q2108142009ND
2021-03-31Q2108142008ND
2021-03-31Q2108142007ND
2021-03-31Q2108142004ND
2021-03-31Q2108142003ND
2021-03-31Q2108142002ND
2022-02-28Q2206681001ND
2022-05-04Q2213477017ND
2022-06-13Q2216387001ND
2022-09-15Q2227732009ND
2022-10-27Q2232469001ND
2022-10-27Q2232469031ND
2022-10-27Q2232469032ND
2023-04-06Q2312829005ND
2023-10-26Q2346224040ND