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EWG's Tap Water Database — 2021 UPDATE

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Simazine

Perry Point V.a. Medical Center

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND10ND
2017ND10ND
2018ND10ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2014-04-240070017_01_14982ND
2014-06-030070017_01_00528ND
2014-07-220070017_01_16359ND
2015-06-0421466ND
2015-09-0422941ND
2015-09-14E16001081001ND
2016-05-09E16004250001ND
2017-06-06E17004803003ND
2018-05-21E18004186001ND
2019-06-069062756_01_AND
2019-09-059091417_01ND