Simazine
Amawalk-shenorock Water District
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 4 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | ND | 4 | 0 | ND |
2017 | ND | 4 | 0 | ND |
2018 | ND | 4 | 0 | ND |
2019 | ND | 4 | 0 | ND |
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 |
---|---|---|
2014-03-10 | 35129491001 SOC | ND |
2014-03-10 | 35129491002 SOC | ND |
2014-03-10 | 35129491004 SOC | ND |
2014-03-10 | 35129491003 SOC | ND |
2016-03-09 | 35233772004 SOC | ND |
2016-03-09 | 35233772002 SOC | ND |
2016-03-09 | 35233772003 SOC | ND |
2016-03-09 | 35233772001 SOC | ND |
2017-02-28 | 35298645003-SOCS | ND |
2017-02-28 | 35298645002-SOCS | ND |
2017-02-28 | 35298645001-SOCS | ND |
2017-02-28 | 35298645004-SOCS | ND |
2018-02-12 | 420-1328041 ME1 | ND |
2018-02-12 | 420-1328041 SG4 | ND |
2018-02-12 | 420-1328041 SG1 | ND |
2018-02-12 | 420-1328041 SG3 | ND |
2019-02-27 | 7081061003 SOCS | ND |
2019-02-27 | 7081061002 SOCS | ND |
2019-02-27 | 7081061001 SOCS | ND |
2019-02-27 | 7081061004 SOCS | ND |