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EWG's Tap Water Database — 2021 UPDATE

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Chlorpyriphos

City of Santa Clara

Chlorpyrifos is an organophosphate pesticide that has been widely used, but in 2021, application on food crops was banned by the EPA. Exposure to chlorpyrifos during pregnancy and early life harms the developing brain, including reduced IQ, delayed development of motor and sensory functions, and social and behavioral dysfunction.

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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