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EWG's Tap Water Database — 2021 UPDATE

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Simazine

Westbury WD

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.

MORE ABOUT THIS CONTAMINANT

 

75

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND120ND
2015ND100ND
2016ND130ND
2017ND130ND
2018ND130ND
2019ND140ND

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
2014-03-181403B99-001-SOCSND
2014-03-251403H32-008-SOCSND
2014-03-251403H32-007-SOCSND
2014-03-251403H32-009-SOCSND
2014-03-251403H32-005-SOCSND
2014-03-251403H32-002-SOCSND
2014-03-251403H32-006-SOCSND
2014-03-251403H32-001-SOCSND
2014-03-251403H32-003-SOCSND
2014-03-251403H32-004-SOCSND
2014-06-171406B77-001-SOCSND
2014-12-161412B31-001-SOCSND
2015-03-241503G45-005-SOCSND
2015-03-241503G45-002-SOCSND
2015-03-241503G45-004-SOCSND
2015-03-241503G45-001-SOCSND
2015-03-241503G45-003-SOCSND
2015-03-251503H48-001-SOCSND
2015-03-251503H48-002-SOCSND
2015-03-251503H48-003-SOCSND
2015-03-251503H48-004-SOCSND
2015-04-091504626-001-SOCSND
2016-03-211603F95-001-SOCSND
2016-03-311603O95-010-SOCSND
2016-03-311603O95-005-SOCSND
2016-03-311603O95-009-SOCSND
2016-03-311603O95-002-SOCSND
2016-03-311603O95-007-SOCSND
2016-03-311603O95-003-SOCSND
2016-03-311603O95-008-SOCSND
2016-03-311603O95-006-SOCSND
2016-03-311603O95-001-SOCSND
2016-06-201606I95-001-SOCSND
2016-09-191609E91-001-SOCSND
2016-12-19707142001ND
2017-03-207013680001-SOCND
2017-03-277014193004-SOCND
2017-03-277014193006-SOCND
2017-03-277014193008-SOCND
2017-03-277014193002-SOCND
2017-03-277014193003-SOCND
2017-03-277014193005-SOCND
2017-03-277014193001-SOCND
2017-03-277014193009-SOCND
2017-03-277014193007-SOCND
2017-03-311603O95-004-SOCSND
2017-06-197021719001-SOCSND
2017-09-187030152001-SOCND
2018-03-267046265001-SOCND
2018-03-267046265005-SOCND
2018-03-267046265002-SOCND
2018-03-267046265007-SOCND
2018-03-267046265004-SOCND
2018-03-267046265009-SOCND
2018-03-267046265006-SOCND
2018-03-267046265008-SOCND
2018-03-267046265003-SOCND
2018-06-187055254001ND
2018-07-027056827001ND
2018-09-067065197001ND
2018-12-187074255001ND
2019-03-18D9C1939-01ND
2019-03-187082629001ND
2019-03-257083335001ND
2019-03-25D9C2483-02ND
2019-03-257083335002ND
2019-03-25D9C2483-04ND
2019-03-257083335004ND
2019-03-25D9C2483-01ND
2019-03-25D9C2483-03ND
2019-03-257083335003ND
2019-06-17D9F2336-01ND
2019-06-177093922001ND
2019-09-1770105266001ND
2019-12-1670115524001ND