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EWG's Tap Water Database — 2021 UPDATE

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Simazine

WA of Great Neck North

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.

MORE ABOUT THIS CONTAMINANT

 

68

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND120ND
2016ND110ND
2017ND130ND
2018ND100ND
2019ND110ND

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
2014-01-221401936-001-SOCSND
2014-01-291401C13-001-SOCSND
2014-05-071405482-001-SOCSND
2014-05-281405J52-001-SOCSND
2014-06-251406I69-001-SOCSND
2014-07-021407155-001-SOCSND
2014-07-151407B47-001-SOCSND
2014-07-151407B47-002-SOCSND
2014-07-231407G56-002-SOCSND
2014-07-231407G56-001-SOCSND
2014-08-141408873-001-POCSND
2015-03-041503285-001-SOCSND
2015-03-101503586-001-SOCSND
2015-04-221504M39-001-SOCSND
2015-05-131505961-001-SOCSND
2015-05-191505D38-001-SOCSND
2015-05-271505J24-001-SOCSND
2015-06-171506E39-001-SOCSND
2015-07-011507073-001-SOCSND
2015-07-081507543-001-SOCSND
2015-07-221507G03-001-SOCSND
2015-08-051508394-001ND
2015-08-121508A11-001-SOCSND
2016-06-221606M90-002-SOCSND
2016-06-221606M90-001-SOCSND
2016-07-061607368-002-SOCSND
2016-07-061607368-001-SOCSND
2016-07-131607999-001-SOCSND
2016-07-201607H11-001-SOCSND
2016-07-201607H11-002-SOCSND
2016-07-271607O22-001-SOCSND
2016-07-271607O22-002-SOCSND
2016-08-031608402-001-SOCSND
2016-08-101608B21-001-SOCSND
2017-06-157021485001-SOCSND
2017-08-017025952002-SOCSND
2017-08-027025952001-SOCSND
2017-08-107026786002ND
2017-08-107026786001ND
2017-08-167027412001-SOCSND
2017-08-177027471002-SOCSND
2017-08-177027471001-SOCSND
2017-08-237028018001ND
2017-08-247028089001ND
2017-08-247028538001ND
2017-08-247028089002ND
2017-12-217038763001ND
2018-03-217046046001ND
2018-06-187055315001ND
2018-07-187060047001ND
2018-07-187058663001ND
2018-07-187058663002ND
2018-07-257059409001ND
2018-08-017060047002ND
2018-08-027060228001ND
2018-09-197065376002ND
2018-09-197065376001ND
2019-08-0770100283002ND
2019-08-0770100283003ND
2019-08-0770100283001ND
2019-08-1470101314003ND
2019-08-1470101314002ND
2019-08-1470101314001ND
2019-08-2170102284003ND
2019-08-2170102284002ND
2019-08-2870102284001ND
2019-08-2870103083002ND
2019-08-2870103083001ND