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EWG's Tap Water Database — 2019 UPDATE

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Simazine

Ayersville Water and Sewer District

NOTE: Ayersville Water and Sewer District purchases water from Defiance City which is required to test for simazine. Sample information shown below was taken by Defiance City.

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0205 ppb62ND - 0.0710 ppb
20130.0423 ppb64ND - 0.0710 ppb
2014ND30ND
20150.0197 ppb31ND - 0.0590 ppb
2016ND30ND
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

NOTE: Ayersville Water and Sewer District purchases water from Defiance City which is required to test for simazine. Sample information shown below was taken by Defiance City.

Date Lab ID Result
2012-01-1012-10448-05CND
2012-04-1012-13996-06ND
2012-04-1012-13996-07ND
2012-06-1212-16821-010.0520 ppb
2012-07-1012-18181-030.0710 ppb
2012-10-0912-22945-03ND
2013-01-0813-10383-03C0.0710 ppb
2013-04-0913-14336-030.0640 ppb
2013-05-1413-15935-04ND
2013-06-1813-17766-02ND
2013-07-0913-18860-140.0550 ppb
2013-10-0813-23673-020.0640 ppb
2014-04-0814-14258-01ND
2014-05-1314-15844-03ND
2014-06-1014-17413-01ND
2015-04-1015-14528-010.0590 ppb
2015-05-0815-15965-03ND
2015-06-1215-18049-01BND
2016-04-1116-15196-01ND
2016-05-1316-17012-01ND
2016-06-1016-18686-01ND
2017-04-1017-16174-04ND
2017-05-1217-18378-03ND
2017-06-0917-20363-02ND