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EWG's Tap Water Database — 2021 UPDATE

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Simazine

City of Fullerton

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

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND40ND
2015N/A00N/A
2016ND220ND
2017N/A00N/A
2018ND80ND
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
2014-06-024417-013-1010ND
2014-06-024417-011-0910ND
2014-08-054417-013-1025ND
2014-08-054417-011-0925ND
2016-02-034417-007-1215ND
2016-02-034417-014-0920ND
2016-02-034417-016-1035ND
2016-02-034417-021-1200ND
2016-02-034417-010-1010ND
2016-02-034417-012-0950ND
2016-02-034417-018-0905ND
2016-02-234417-015-0955ND
2016-05-024417-018-0935ND
2016-05-024417-010-0955ND
2016-05-024417-012-1010ND
2016-05-024417-016-1150ND
2016-05-024417-021-1045ND
2016-05-024417-007-1115ND
2016-05-024417-014-0900ND
2016-05-024417-001-1225ND
2016-06-294417-015-0905ND
2016-08-044417-001-1145ND
2016-08-044417-015-1115ND
2016-08-044417-007-1045ND
2016-08-044417-021-1030ND
2016-08-044417-016-1230ND
2018-05-164417-011-0905ND
2018-08-234417-018-0840ND
2018-08-234417-011-0830ND
2018-08-234417-012-0915ND
2018-08-234417-014-0900ND
2018-11-054417-012-0910ND
2018-11-054417-014-0835ND
2018-11-054417-018-0855ND
2019-03-054417-007-1230ND
2019-03-204417-016-0850ND
2019-03-204417-015-1020ND
2019-03-204417-001-0945ND
2019-04-034417-016-1335ND
2019-04-034417-018-1245ND
2019-04-034417-007-1140ND
2019-04-034417-015-1215ND
2019-04-034417-021-1110ND
2019-04-034417-001-1410ND
2019-07-184417-021-0850ND