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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Sandy City Water System

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.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND160ND
2013N/A00N/A
2014ND50ND
2015ND50ND
2016ND40ND
2017ND20ND

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 Result
2012-06-14ND
2012-06-15ND
2012-06-15ND
2012-08-02ND
2012-08-03ND
2012-08-03ND
2012-08-07ND
2012-08-07ND
2012-08-08ND
2012-08-08ND
2012-08-08ND
2012-08-09ND
2012-10-09ND
2012-10-09ND
2012-11-27ND
2012-11-27ND
2014-02-20ND
2014-05-30ND
2014-05-30ND
2014-06-25ND
2014-07-21ND
2015-02-25ND
2015-07-06ND
2015-07-14ND
2015-07-16ND
2015-07-22ND
2016-06-14ND
2016-06-21ND
2016-06-22ND
2016-06-22ND
2017-06-22ND
2017-09-01ND