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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Lee County WSC

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND20ND
2014N/A00N/A
2015ND90ND
2016ND60ND
2017ND80ND

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
2012-01-11AB77488ND
2012-01-11AB77486ND
2012-01-11AB77483ND
2012-01-11AB77482ND
2012-01-11AB77485ND
2013-10-14Q1308854030ND
2013-10-14Q1308854018ND
2015-03-04AC83057ND
2015-03-04AC83056ND
2015-03-04AC83055ND
2015-03-04AC83058ND
2015-06-17AC96431ND
2015-06-17AC96429ND
2015-06-17AC96427ND
2015-09-01AD05253ND
2015-10-15AD10881ND
2016-01-27AD20522ND
2016-01-27AD20519ND
2016-04-12AD32913ND
2016-04-12AD32912ND
2016-07-26AD45813ND
2016-10-31AD55672ND
2017-01-30AD67684ND
2017-01-30AD67683ND
2017-05-04AD82881ND
2017-05-30AD86010ND
2017-07-24AD90418ND
2017-07-24AD90417ND
2017-10-26AE02515ND
2017-10-26AE02516ND