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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Greenville City PWS

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
2014ND30ND
2015ND30ND
2016ND30ND
2017ND30ND

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
2012-04-059800113868ND
2012-05-039800119475ND
2012-06-079800028734ND
2013-04-049800056252ND
2013-05-029800100815ND
2013-06-069800107914ND
2014-04-03A140124418ND
2014-05-01A140124420ND
2014-06-05A140191621ND
2015-04-02A150232329ND
2015-05-01A150285277ND
2015-06-05A150232332ND
2016-04-01A160374757ND
2016-05-05A160399111ND
2016-06-02A160338189ND
2017-04-06A170487419ND
2017-05-05A170487420ND
2017-06-01A170487421ND