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EWG's Tap Water Database — 2021 UPDATE

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Alachlor (Lasso)

West Harris County Municipal Utility District 10

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

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND10ND
2016ND20ND
2017ND10ND
2018ND10ND
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
2014-08-07AC62604ND
2015-06-11AC95740ND
2016-02-29AD26257ND
2016-05-13AD36896ND
2017-02-08AD69731ND
2018-04-09AE21766ND
2019-02-20AE55148ND
2019-02-20AE55145ND