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EWG's Tap Water Database — 2021 UPDATE

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Permethrin

City of Santa Clara

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.

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43

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND200ND
2019ND160ND

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-29201801300725ND
2018-01-29201801300724ND
2018-02-05201802060641ND
2018-02-05201802060642ND
2018-02-05201802060648ND
2018-02-05201802060625ND
2018-02-08201802090289ND
2018-02-08201802090317ND
2018-02-08201802090331ND
2018-04-17201804180306ND
2018-04-17201804180298ND
2018-08-13201808020596ND
2018-08-13201808020600ND
2018-08-16201808020595ND
2018-08-16201808020601ND
2018-08-20201808020599ND
2018-08-20201808020597ND
2018-09-11201809120660ND
2018-11-19201811200258ND
2018-11-19201811200259ND
2019-02-06201902070721ND
2019-02-06201902070655ND
2019-02-06201902070654ND
2019-02-074203965ND
2019-02-074203371ND
2019-02-074203959ND
2019-02-11201902120301ND
2019-02-11201902120300ND
2019-08-14201908150726ND
2019-08-20201908210124ND
2019-08-20201908210125ND
2019-08-20201908210123ND
2019-08-21201908220472ND
2019-08-21201908220473ND
2019-08-22201908230015ND
2019-10-01201910020323ND
2020-02-04202002050572ND
2020-02-05202002060196ND
2020-02-06202002070105ND
2020-08-11202008120095ND
2020-08-12202008130124ND
2020-08-13202008140019ND
2020-08-27202008280047ND