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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Compton Water Department

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
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017ND60ND
2018ND60ND
2019ND10ND

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
2017-10-059588-011-1140ND
2017-10-059588-013-1110ND
2017-10-059588-015-1045ND
2017-10-059588-019-1020ND
2017-10-059588-028-1000ND
2017-12-119588-009-1032ND
2018-01-099588-009-1041ND
2018-04-129588-009-1005ND
2018-06-289588-014-1015ND
2018-10-259588-011-1107ND
2018-10-259588-015-1150ND
2018-12-199588-014-1000ND
2019-01-309588-015-1030ND