Know Your Environment. Protect Your Health.

Alachlor (Lasso)

Houma Water Treatment Service Area

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

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND40ND
2020ND20ND
2021ND20ND
2022ND20ND
20230.0160 ppb21ND - 0.0320 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-08-2335413192001ND
2018-08-2335413192001ND
2019-02-1835449356001ND
2019-02-1835449356001ND
2019-08-2835494058001ND
2019-08-2835494058001ND
2020-01-2235526020001ND
2020-12-0335596462001ND
2021-03-1135619288001ND
2021-11-0435675777001ND
2022-03-0235701433001ND
2022-10-1235753132001ND
2023-04-11357919370010.0320 ppb
2023-12-2135849973001ND