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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

City of Orange

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

MORE ABOUT THIS CONTAMINANT

 

59

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
2014ND50ND
2015ND20ND
2016ND230ND
2017ND100ND
2018ND170ND
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
2014-03-134417-023-0930ND
2014-05-144417-034-0930ND
2014-05-144417-008-1335ND
2014-08-274417-034-0830ND
2014-08-274417-008-1050ND
2015-03-254417-017-1110ND
2015-04-284417-017-1000ND
2016-01-194417-021-0945ND
2016-01-194417-016-0910ND
2016-01-264417-034-1010ND
2016-01-264417-018-1030ND
2016-01-264417-019-1220ND
2016-01-264417-020-1115ND
2016-01-264417-023-1055ND
2016-01-264417-009-0925ND
2016-01-264417-003-0950ND
2016-04-144417-003-1150ND
2016-04-144417-015-1110ND
2016-04-254417-009-1245ND
2016-04-254417-018-1020ND
2016-04-254417-023-1115ND
2016-04-254417-019-1225ND
2016-04-254417-016-1045ND
2016-04-254417-021-1150ND
2016-07-274417-049-0850ND
2016-07-274417-015-1015ND
2016-09-134417-020-1035ND
2016-10-064417-049-1030ND
2016-10-184417-020-0920ND
2016-12-134417-022-1015ND
2017-01-114417-049-0920ND
2017-01-114417-022-1020ND
2017-01-164417-008-1050ND
2017-04-054417-049-0950ND
2017-04-254417-008-0920ND
2017-04-254417-022-1000ND
2017-05-184417-022-0950ND
2017-05-184417-034-0820ND
2017-05-234417-008-1005ND
2017-08-234417-034-0830ND
2018-03-064417-017-1115ND
2018-03-064417-009-1220ND
2018-03-064417-049-0935ND
2018-03-064417-018-0840ND
2018-03-064417-023-0950ND
2018-03-064417-016-0915ND
2018-03-064417-019-1135ND
2018-03-064417-020-1015ND
2018-03-064417-021-1055ND
2018-05-094417-023-1035ND
2018-05-094417-009-1310ND
2018-05-094417-018-0940ND
2018-05-094417-016-1005ND
2018-05-094417-019-1255ND
2018-05-094417-049-1050ND
2018-05-094417-017-1230ND
2018-05-094417-020-1120ND
2019-04-224417-021-1010ND
2019-09-054417-021-1210ND