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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Lubbock Public Water System

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND40ND
2014ND20ND
2015ND20ND
2016ND30ND
2017ND20ND

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
2012-01-11AB77647ND
2013-01-161301430003ND
2013-06-11Q1302096010ND
2013-08-06Q1304984005ND
2013-12-10Q1317110005ND
2014-01-22Q1401929004ND
2014-02-12Q1404338004ND
2015-02-03Q1504173007ND
2015-04-07Q1513290007ND
2016-02-03Q1604716006ND
2016-02-03Q1604716007ND
2016-04-06Q1613543003ND
2017-02-08Q1705565005ND
2017-09-27Q1746701007ND