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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Yorktown Water

Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.

MORE ABOUT THIS CONTAMINANT

 

28

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND140ND
2015N/A00N/A
2016N/A00N/A
2017ND70ND
2018ND70ND
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for alachlor, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-1114226000106ND
2014-08-1114226000606ND
2014-08-1114226000306ND
2014-08-1114226000206ND
2014-08-1114226000706ND
2014-08-1114226000406ND
2014-08-1114226000506ND
2014-10-2114296009906ND
2014-10-2114296009806ND
2014-10-2114296010006ND
2014-10-2114296009406ND
2014-10-2114296009706ND
2014-10-2114296009606ND
2014-10-2114296009506ND
2017-10-1717292005306ND
2017-10-1717292005806ND
2017-10-1717292005706ND
2017-10-1717292005606ND
2017-10-1717292005906ND
2017-10-1717292005506ND
2017-10-1717292005406ND
2018-01-0218004010301ND
2018-01-0218004010501ND
2018-01-0218004010201ND
2018-01-0218004010401ND
2018-01-0218004010001ND
2018-01-0218004010101ND
2018-03-1218074002801ND