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EWG's Tap Water Database — 2021 UPDATE

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Permethrin

Golden State Water Company - Simi

Permethrin is an insecticide used on agricultural crops, but most uses are non-agricultural. It can be applied to residential areas to control mosquitoes and ticks and also used as a bug repellent on clothing, as well as medical applications to treat head lice. Long-term exposure to permethrin may harm the liver.

 

5

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND50ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-13201803130563ND
2018-03-13201803130564ND
2018-06-19201806190563ND
2018-09-11201809110551ND
2018-12-04201812040705ND