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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

City of Baltimore

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

MORE ABOUT THIS CONTAMINANT

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND130ND
2016ND60ND
2017ND110ND
2018ND20ND
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
2014-01-290300002_02_00348ND
2014-01-290300002_01_00348ND
2014-06-300300002_02_PLTS1ND
2014-07-300300002_01_TREATND
2015-03-182060750002ND
2015-03-182060750003ND
2015-06-032075366001ND
2015-06-032075366002ND
2015-06-032075366003ND
2015-06-22E15004053001ND
2015-06-22E15004053003ND
2015-09-102095329003ND
2015-09-102095329001ND
2015-09-102095329002ND
2015-12-10ASH_TND
2015-12-10PLT_2ND
2015-12-10PLTS_1ND
2016-05-23E16004413004ND
2016-05-23E16004413006ND
2016-05-23E16004413002ND
2016-09-21PLT_1ND
2016-09-21PLT_2ND
2016-09-21TREATED_A_1ND
2017-04-20TREATED_T1_AND
2017-04-20TREATED_T4_1ND
2017-04-20TREATED_A_AND
2017-06-08TREATED_A_CND
2017-06-08PLANT_2ND
2017-06-12PLANT_1ND
2017-06-20E17005034001ND
2017-06-20E17005035001ND
2017-12-120300002_121217_AND
2017-12-120300002_121217_MND
2017-12-120300002_121217_MND
2018-05-14E18004105001ND
2018-05-14E18004100003ND
2019-07-31E20000422001ND
2019-07-31E20000423001ND