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EWG's Tap Water Database — 2021 UPDATE

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Permethrin

Cassatt Water Kershaw-lee Company RWA

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.

 

28

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
2018N/A00N/A
2019ND270ND

ppb = parts per billion

All test results

Date Lab ID Result
2019-03-254237165ND
2019-03-254237169ND
2019-03-254237160ND
2019-03-254237113ND
2019-03-254237181ND
2019-03-254237127ND
2019-03-254237079ND
2019-03-254237097ND
2019-03-254237140ND
2019-03-254237093ND
2019-03-254237151ND
2019-03-254237175ND
2019-03-264238761ND
2019-06-134325088ND
2019-09-254437191ND
2019-09-254436805ND
2019-09-254437295ND
2019-09-254437171ND
2019-09-254437340ND
2019-09-254437395ND
2019-09-254437401ND
2019-09-264437020ND
2019-09-264437305ND
2019-09-264437278ND
2019-09-264437426ND
2019-09-264436948ND
2019-09-264437201ND
2020-01-284551581ND