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EWG's Tap Water Database — 2021 UPDATE

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Simazine

East Jefferson Waterworks District 1

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
2014ND120ND
2015ND120ND
2016ND120ND
2017ND120ND
20180.1000 ppb131ND - 0.200 ppb
20190.1000 ppb131ND - 0.200 ppb

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
2014-01-06AD88198ND
2014-01-06AD88199ND
2014-01-06AD88200ND
2014-01-06AD88200ND
2014-01-06AD88199ND
2014-01-06AD88198ND
2014-10-15AD98626ND
2014-10-15AD98625ND
2014-10-15AD98624ND
2014-10-15AD98626ND
2014-10-15AD98625ND
2014-10-15AD98624ND
2015-02-2335177313003ND
2015-02-2335177313004ND
2015-02-2335177313005ND
2015-02-2335177313005ND
2015-02-2335177313004ND
2015-02-2335177313003ND
2015-09-3035209766004ND
2015-09-3035209766003ND
2015-09-3035209766005ND
2015-09-3035209766005ND
2015-09-3035209766004ND
2015-09-3035209766003ND
2016-01-2035226299004ND
2016-01-2035226299003ND
2016-01-2035226299005ND
2016-01-2035226299003ND
2016-01-2035226299004ND
2016-01-2035226299005ND
2016-12-0735282147002ND
2016-12-0735282147001ND
2016-12-0735282147003ND
2016-12-0735282147003ND
2016-12-0735282147001ND
2016-12-0735282147002ND
2017-02-0935294515005ND
2017-02-0935294515005ND
2017-02-0935294515004ND
2017-02-0935294515003ND
2017-02-0935294515004ND
2017-02-0935294515003ND
2017-05-0835311302004ND
2017-05-0835311302003ND
2017-05-0835311302005ND
2017-05-0835311302005ND
2017-05-0835311302004ND
2017-05-0835311302003ND
2018-03-1535380393001ND
2018-03-1535380393003ND
2018-03-1535380393002ND
2018-03-1535380393001ND
2018-03-1535380393003ND
2018-03-1535380393002ND
2018-06-010.1000 ppb*
2018-08-1535411635002ND
2018-08-1535411635003ND
2018-08-1535411635001ND
2018-08-1535411635001ND
2018-08-1535411635002ND
2018-08-1535411635003ND
2019-02-2735451093001ND
2019-02-2735451094001ND
2019-02-2735451088001ND
2019-02-2735451088001ND
2019-02-2735451093001ND
2019-02-2735451094001ND
2019-06-010.1000 ppb*
2019-08-0135486656001ND
2019-08-0135486659001ND
2019-08-0135486654001ND
2019-08-0135486654001ND
2019-08-0135486659001ND
2019-08-0135486656001ND

* Sample result is taken from the system's CCR report.