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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

Harris County FWSD 51

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

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND20ND
2016ND20ND
2017ND20ND
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
2014-02-03AC41137ND
2014-02-03AC41140ND
2015-01-21AC77165ND
2015-01-21AC77144ND
2016-01-25AD19874ND
2016-01-25AD19871ND
2017-03-03AD73549ND
2017-04-28AD81993ND
2018-02-08AE13119ND
2018-02-08AE13120ND
2019-01-14AE49667ND
2019-01-14AE49666ND