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EWG's Tap Water Database

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Simazine

Del-Co Water Company Inc.

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.

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010ND70ND
20110.160 ppb87ND - 0.230 ppb
20120.149 ppb770.0690 ppb - 0.410 ppb
20130.0886 ppb74ND - 0.180 ppb
20140.0733 ppb97ND - 0.150 ppb
20150.116 ppb76ND - 0.160 ppb

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.1 ppb

The 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.

ppb = parts per billion.

EPA Maximum Contaminant
Level (MCL) 4 ppb

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppb = parts per billion.

EPA Maximum Contaminant
Level Goal (MCLG)4 ppb

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppb = parts per billion.

All test results

Date Lab ID Result
2010-04-06103069-03ND
2010-04-06103070-03ND
2010-05-04103820-02ND
2010-05-04103818-02ND
2010-06-07104726-02BND
2010-06-08104776-01ND
2010-06-08104774-01ND
2011-01-1711-10359-01BND
2011-04-1111-12380-010.220 ppb
2011-04-1111-12380-020.150 ppb
2011-05-0311-12911-020.230 ppb
2011-05-0311-12909-030.210 ppb
2011-06-1411-14162-030.210 ppb
2011-06-1411-14164-030.180 ppb
2011-06-1511-14240-01C0.0820 ppb
2012-04-0312-13549-010.150 ppb
2012-04-0312-13552-010.0750 ppb
2012-05-0812-15073-010.130 ppb
2012-05-0812-15072-010.0690 ppb
2012-06-0512-16248-010.410 ppb
2012-06-0512-16249-010.0970 ppb
2012-06-0512-16251-010.110 ppb
2013-04-0813-14226-010.160 ppb
2013-04-0813-14225-010.180 ppb
2013-05-0713-15437-010.130 ppb
2013-05-0713-15438-010.150 ppb
2013-06-0313-16652-01ND
2013-06-0313-16651-01ND
2013-06-0313-16650-01ND
2014-01-0714-10165-01CND
2014-04-0814-14143-010.0500 ppb
2014-04-0814-14142-010.0900 ppb
2014-05-0614-15305-010.110 ppb
2014-05-0614-15306-01ND
2014-05-0714-15406-01C0.0600 ppb
2014-06-0314-16744-010.130 ppb
2014-06-0314-16742-010.150 ppb
2014-06-0314-16743-010.0700 ppb
2015-04-0615-14123-010.150 ppb
2015-04-0615-14124-010.120 ppb
2015-05-0515-15518-010.1000 ppb
2015-05-0515-15517-010.160 ppb
2015-06-0215-17058-010.140 ppb
2015-06-0215-17059-010.140 ppb
2015-06-0815-17517-01CND