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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Purcellville, Town of

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

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND30ND
2016ND10ND
2017N/A00N/A
2018ND50ND
2019ND20ND

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
2014-07-31E140606685ND
2014-08-21E140606718ND
2015-02-18VA010-DCLSND
2015-05-21VA010-DCLSND
2015-08-06VA010-DCLSND
2016-08-16E160700331ND
2018-03-13E180100343ND
2018-05-30E180303848ND
2018-05-30E180303852ND
2018-08-21E180601977ND
2018-08-28E180601952ND
2019-03-21E190302937ND
2019-03-21E190302946ND