Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Simazine

City of Anaheim

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

 

74

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
2015ND90ND
2016ND260ND
2017ND90ND
2018ND40ND
2019ND220ND

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
2014-04-034417-063-0840ND
2014-06-184417-088-0940ND
2014-07-024417-088-1110ND
2014-07-024417-063-0820ND
2015-03-034417-086-0850ND
2015-03-094417-090-0850ND
2015-04-134417-058-0745ND
2015-04-134417-086-0840ND
2015-04-274417-090-0905ND
2015-07-074417-058-0845ND
2015-07-144417-096-1120ND
2015-10-054417-096-1240ND
2015-10-054417-096-1230ND
2016-01-044417-033-0945ND
2016-01-044417-050-1050ND
2016-01-044417-037-1200ND
2016-01-044417-036-1150ND
2016-01-044417-034-1010ND
2016-01-114417-096-1010ND
2016-03-224417-051-1000ND
2016-04-054417-096-1120ND
2016-04-114417-062-0945ND
2016-04-114417-033-0855ND
2016-04-114417-034-1010ND
2016-04-114417-050-1200ND
2016-04-114417-035-1135ND
2016-04-114417-037-1105ND
2016-04-114417-049-1230ND
2016-04-114417-036-1120ND
2016-04-184417-051-0935ND
2016-04-184417-087-1035ND
2016-04-184417-053-1000ND
2016-07-074417-049-0950ND
2016-07-114417-088-1010ND
2016-07-114417-036-0940ND
2016-07-114417-087-1045ND
2016-07-114417-062-1145ND
2016-07-114417-053-1100ND
2016-07-114417-035-0920ND
2017-04-044417-063-1150ND
2017-04-054417-088-1145ND
2017-07-104417-063-1200ND
2017-07-104417-088-0940ND
2017-07-104417-053-1120ND
2017-07-104417-090-1145ND
2017-07-104417-096-1015ND
2017-10-174417-090-1200ND
2017-10-234417-096-0935ND
2018-01-114417-086-0820ND
2018-04-034417-086-1200ND
2018-04-034417-058-0910ND
2018-07-234417-058-1030ND
2019-01-084417-033-0950ND
2019-01-084417-051-1025ND
2019-01-104417-037-0930ND
2019-01-104417-035-0910ND
2019-03-194417-110-0910ND
2019-03-284417-050-1445ND
2019-04-094417-087-1230ND
2019-04-094417-033-1025ND
2019-04-094417-049-1130ND
2019-04-104417-035-1015ND
2019-04-104417-053-1230ND
2019-04-104417-051-1120ND
2019-04-104417-062-1150ND
2019-04-104417-050-0900ND
2019-04-104417-037-1040ND
2019-04-174417-110-1210ND
2019-08-064417-049-1030ND
2019-08-064417-110-1215ND
2019-08-074417-053-0925ND
2019-08-074417-062-1050ND
2019-08-074417-087-0955ND
2019-10-084417-110-1320ND