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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Garden City Water and Sewer 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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

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
2013-05-13S1320406ND
2013-05-13S1320403ND
2013-05-13S1320404ND
2013-05-13S1320401ND
2013-05-14S1320583ND
2013-05-14S1320586ND
2013-07-02S1328445ND
2013-07-02S1328446ND
2016-05-26S1622903ND
2016-05-26S1622947ND
2016-07-18S1631707ND
2016-07-18S1631708ND
2016-07-18S1631706ND