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EWG's Tap Water Database — 2021 UPDATE

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Permethrin

West Sound Utility District #1

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.

 

18

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
2019ND90ND

ppb = parts per billion

All test results

Date Lab ID Result
2019-09-23201909240141ND
2019-09-23201909240107ND
2019-09-23201909240243ND
2019-09-24201909250119ND
2019-09-24201909250198ND
2019-09-24201909250218ND
2019-09-25201909260164ND
2019-09-25201909260213ND
2019-09-25201909260175ND
2020-03-23202003240045ND
2020-03-24202003250235ND
2020-03-24202003250318ND
2020-03-25202003260246ND
2020-03-25202003260136ND
2020-03-25202003260140ND
2020-03-25202003260285ND
2020-03-25202003260126ND
2020-12-30202012310062ND