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EWG's Tap Water Database — 2021 UPDATE

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Simazine

Town of Payson

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

 

66

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015N/A00N/A
2016ND540ND
2017N/A00N/A
2018N/A00N/A
2019N/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
2014-01-08550-17264-4ND
2014-01-08550-17264-3ND
2014-01-08550-17264-2ND
2014-01-08550-17264-1ND
2014-01-13550-17573-4ND
2014-01-13550-17573-3ND
2014-01-13550-17573-2ND
2014-01-13550-17573-1ND
2014-02-03201402040614SDND
2014-02-03201402040614SCND
2014-02-03201402040614SBND
2014-02-03201402040614SAND
2016-02-02201602040010SBND
2016-02-02201602040010SAND
2016-02-02201602040010SCND
2016-02-02201602040010SDND
2016-02-02201602040010SEND
2016-02-08201602080185SDND
2016-02-08201602080185SCND
2016-02-08201602080185SBND
2016-02-08201602080185SAND
2016-02-09201602100015SDND
2016-02-09201602100015SAND
2016-02-09201602100015SBND
2016-02-09201602100015SCND
2016-02-09201602100015SEND
2016-02-16201602180029SEND
2016-02-16201602180029SDND
2016-02-16201602180029SCND
2016-02-16201602180029SBND
2016-02-16201602180029SAND
2016-02-17201602180018SDND
2016-02-17201602180018SCND
2016-02-17201602180018SBND
2016-02-17201602180018SAND
2016-02-22201602240056SDND
2016-02-22201602240056SCND
2016-02-22201602240056SBND
2016-02-22201602240056SAND
2016-07-08201607190102SBND
2016-07-08201607190102SAND
2016-07-08201607190102SCND
2016-07-08201607190102SDND
2016-07-19201607210249SEND
2016-07-19201607210249SDND
2016-07-19201607210249SCND
2016-07-19201607210249SBND
2016-07-19201607210249SAND
2016-07-20201607210259SEND
2016-07-20201607210259SAND
2016-07-20201607210259SBND
2016-07-20201607210259SCND
2016-07-20201607210259SDND
2016-07-25201607260098SDND
2016-07-25201607260098SCND
2016-07-25201607260098SBND
2016-07-25201607260098SAND
2016-07-26201607270055SDND
2016-07-26201607270055SCND
2016-07-26201607270055SBND
2016-07-26201607270055SAND
2016-07-27201607280041SCND
2016-07-27201607280041SBND
2016-07-27201607280041SAND
2016-08-15201608160279SAND
2016-08-15201608160279SBND