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EWG's Tap Water Database — 2021 UPDATE

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Permethrin

San Joaquin, City Of

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.

 

6

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
2018ND60ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-21100441PND
2018-04-04102944RND
2018-04-04102945RND
2018-08-15107044PND
2018-08-15107045PND
2018-08-15107046PND