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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Kansas City Board of Public Utilities

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
20140.0167 ppb31ND - 0.0500 ppb
2015ND10ND
2016ND20ND
2017ND30ND

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
2012-01-11JAN2012-OC-525ND
2012-05-232012-05-23--525&ND
2012-07-302012-07-30--525ND
2012-10-172012-10-17--525ND
2013-01-282013-01-28--OC52ND
2013-05-15MAY-13-OCND
2013-07-292013-07-29--525ND
2013-11-202013-11-20--525ND
2014-01-222014-01-22--OC52ND
2014-05-13MAY-14-SOCND
2014-08-132014-08-13--OC520.0500 ppb
2015-05-13MAY-15-SOCND
2016-08-22AUG-16-SEMIVOCND
2016-11-15NOV-16-SEMIVOCND
2017-01-11JAN-17-SEMIVOCND
2017-08-072017-08-07-SOCND
2017-11-092017-11-09-SOCND