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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

City of Modesto

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

MORE ABOUT THIS CONTAMINANT

 

45

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017ND10ND
2018N/A00N/A
2019ND440ND

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
2017-12-131610-196-1010ND
2019-12-111610-009-0820ND
2019-12-111610-243-0840ND
2019-12-111610-241-0920ND
2019-12-111610-196-0907ND
2019-12-111610-189-0920ND
2019-12-111610-187-0850ND
2019-12-111610-172-1000ND
2019-12-111610-137-1115ND
2019-12-111610-136-1140ND
2019-12-111610-134-1050ND
2019-12-111610-131-1045ND
2019-12-111610-130-1340ND
2019-12-111610-129-1155ND
2019-12-111610-124-0730ND
2019-12-111610-070-1113ND
2019-12-111610-003-0750ND
2019-12-111610-066-0855ND
2019-12-111610-027-0730ND
2019-12-111610-053-0950ND
2019-12-111610-035-1030ND
2019-12-111610-044-0810ND
2019-12-121610-032-0830ND
2019-12-121610-132-0940ND
2019-12-121610-133-1040ND
2019-12-121610-135-0940ND
2019-12-121610-151-0811ND
2019-12-121610-149-0826ND
2019-12-121610-146-0841ND
2019-12-121610-147-0845ND
2019-12-121610-148-0749ND
2019-12-171610-245-0900ND
2019-12-181610-047-0920ND
2019-12-181610-048-0900ND
2019-12-181610-170-1026ND
2019-12-181610-049-0935ND
2019-12-181610-043-0930ND
2019-12-181610-042-1015ND
2019-12-181610-191-1117ND
2019-12-181610-050-0750ND
2019-12-181610-062-0745ND
2019-12-181610-226-1205ND
2019-12-181610-127-0955ND
2019-12-181610-097-1010ND
2019-12-181610-068-0730ND