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EWG's Tap Water Database — 2021 UPDATE

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Chlorpyriphos

South Tahoe PUD - Main

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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25

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
2019ND250ND

ppb = parts per billion

All test results

Date Lab ID Result
2019-01-02201901030395ND
2019-01-02201901030397ND
2019-01-02201901030396ND
2019-01-02201901030398ND
2019-01-09201901100253ND
2019-01-09201901100255ND
2019-01-09201901100254ND
2019-01-09201901100252ND
2019-01-10201901110333ND
2019-01-10201901110332ND
2019-01-29201901310183ND
2019-01-29201901310180ND
2019-01-29201901310181ND
2019-03-12201903140639ND
2019-04-02201904030324ND
2019-07-10201907110552ND
2019-07-16201907180193ND
2019-07-16201907180189ND
2019-07-16201907180195ND
2019-07-16201907180192ND
2019-07-16201907180191ND
2019-07-16201907180187ND
2019-07-16201907180188ND
2019-07-16201907180194ND
2019-07-16201907180190ND