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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Edina

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.

 

31

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND100ND
2014ND50ND
2015N/A00N/A
2016ND140ND
2017ND10ND

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
2012-03-2712C0954-01ND
2013-02-2713B1315-01ND
2013-05-3013E2572-01ND
2013-05-3013E2572-02ND
2013-05-3013E2572-04ND
2013-07-2513G2163-01ND
2013-07-2513G2162-02ND
2013-07-2513G2159-02ND
2013-07-2513G2159-01ND
2013-12-1213L0421-01ND
2013-12-1213L0421-02ND
2014-08-2014H1841-02ND
2014-08-2014H1844-02ND
2014-08-2014H1844-03ND
2014-11-1914K0831-02ND
2014-11-1914K0831-01ND
2016-04-113428615ND
2016-04-113428663ND
2016-04-113428679ND
2016-04-113428700ND
2016-06-203475893ND
2016-06-213478339ND
2016-06-213475937ND
2016-06-213475908ND
2016-06-213475818ND
2016-07-213500709ND
2016-07-213500714ND
2016-07-213500792ND
2016-07-213500797ND
2016-07-263504268ND
2017-07-2617G1803-01ND