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EWG's Tap Water Database — 2021 UPDATE

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Permethrin

UC - Davis

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.

 

12

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
2018ND120ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2018-03-13A8B2306-01ND
2018-03-13A8B2306-02ND
2018-03-13A8B2306-03ND
2018-03-13A8B2306-05ND
2018-03-13A8B2306-06ND
2018-03-13A8B2306-07ND
2018-09-18A8H1772-01ND
2018-09-18A8H1772-02ND
2018-09-18A8H1772-03ND
2018-09-18A8H1772-05ND
2018-09-18A8H1772-06ND
2018-09-18A8H1772-07ND