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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

City of Santa Ana

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

MORE ABOUT THIS CONTAMINANT

 

81

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
2015ND370ND
2016ND60ND
2017N/A00N/A
2018ND310ND
2019ND70ND

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
2015-02-244417-038-0735ND
2015-02-244417-034-1215ND
2015-02-244417-028-0905ND
2015-02-244417-073-0940ND
2015-02-244417-039-1020ND
2015-02-244417-037-0810ND
2015-03-184417-061-0805ND
2015-03-184417-026-0900ND
2015-05-194417-035-0820ND
2015-05-194417-019-0840ND
2015-05-194417-034-1120ND
2015-05-194417-028-0915ND
2015-05-194417-073-0935ND
2015-05-194417-038-0640ND
2015-05-194417-026-1010ND
2015-05-194417-074-1050ND
2015-05-194417-030-0720ND
2015-05-194417-061-0850ND
2015-05-194417-031-0950ND
2015-05-194417-022-0735ND
2015-05-194417-037-0750ND
2015-05-194417-021-0705ND
2015-06-164417-039-0725ND
2015-06-164417-027-0635ND
2015-08-124417-021-0435ND
2015-08-124417-030-0445ND
2015-08-124417-031-0705ND
2015-08-124417-019-0525ND
2015-08-124417-027-0555ND
2015-08-124417-026-0640ND
2015-08-124417-025-0510ND
2015-08-124417-074-0610ND
2015-08-124417-035-0540ND
2015-08-124417-022-0455ND
2015-11-174417-029-0920ND
2015-11-174417-025-0820ND
2015-11-174417-033-0910ND
2016-02-164417-033-1220ND
2016-02-164417-018-1200ND
2016-03-074417-029-0810ND
2016-04-054417-018-0805ND
2016-04-054417-033-0815ND
2016-04-054417-029-0840ND
2018-02-214417-061-0725ND
2018-02-214417-019-0700ND
2018-02-214417-037-0610ND
2018-02-214417-021-1050ND
2018-02-214417-074-0920ND
2018-02-214417-035-0650ND
2018-02-214417-022-1120ND
2018-02-214417-025-0630ND
2018-02-214417-026-0950ND
2018-02-214417-034-1020ND
2018-02-214417-027-0750ND
2018-02-214417-028-0805ND
2018-02-214417-039-0830ND
2018-04-264417-035-0815ND
2018-05-154417-061-1030ND
2018-05-154417-039-1125ND
2018-05-154417-074-1015ND
2018-05-154417-019-0845ND
2018-05-154417-021-0750ND
2018-05-154417-022-1240ND
2018-05-154417-034-1215ND
2018-05-154417-025-1050ND
2018-05-154417-026-1145ND
2018-05-154417-027-0910ND
2018-05-154417-031-0950ND
2018-05-154417-028-0920ND
2018-05-154417-037-0815ND
2018-06-204417-030-0815ND
2018-08-214417-030-0740ND
2018-08-214417-031-0835ND
2018-10-114417-038-0800ND
2019-05-074417-038-0845ND
2019-07-234417-033-0750ND
2019-07-234417-038-0815ND
2019-09-174417-073-0815ND
2019-11-054417-073-0955ND
2019-11-054417-073-1505ND
2019-11-054417-033-1140ND