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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Town of Princess Anne

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
2012ND20ND
2013N/A00N/A
2014N/A00N/A
2015ND20ND
2016ND100ND
2017N/A00N/A

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
2012-09-110190002_07_00126ND
2012-09-110190002_08_00126ND
2015-09-22E16001238001ND
2015-09-22L5827349-1ND
2016-03-30E16003648004ND
2016-03-30E16003648002ND
2016-08-05E17000501005ND
2016-08-05E17000501002ND
2016-10-19E17001766001ND
2016-12-21L6605660_3_AND
2016-12-21L6605660_2_AND
2016-12-21L6605660_1_AND
2016-12-21L6605660_4_AND
2016-12-29L6609497ND