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Alachlor (Lasso)

Metropolitan Water District of So. Cal.

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

MORE ABOUT THIS CONTAMINANT

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND100ND
2019N/A00N/A
2020N/A00N/A
2021ND100ND
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-04-02CA1910087_003_003-201804021344ND
2018-04-02CA1910087_005_005-201804021229ND
2018-04-02CA1910087_020_020-201804021124ND
2018-04-03CA1910087_026_026-201804031528ND
2018-04-09CA1910087_013_013-201804090805ND
2018-10-01CA1910087_020_020-201810011015ND
2018-10-01CA1910087_003_003-201810011140ND
2018-10-02CA1910087_005_005-201810021115ND
2018-10-02CA1910087_013_013-201810021010ND
2018-10-02CA1910087_026_026-201810020950ND
2021-04-05CA1910087_005_005-202104050720ND
2021-04-05CA1910087_020_020-202104051100ND
2021-04-05CA1910087_003_003-202104050701ND
2021-04-06CA1910087_026_026-202104060904ND
2021-04-06CA1910087_013_013-202104060715ND
2021-08-03CA1910087_003_003-202108030650ND
2021-08-03CA1910087_020_020-202108031015ND
2021-08-03CA1910087_005_005-202108030907ND
2021-08-03CA1910087_013_013-202108031015ND
2021-08-03CA1910087_026_026-202108030845ND