Know Your Environment. Protect Your Health.

Alachlor (Lasso)

Lewiston Orchards Irrigation District

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

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND30ND
2020ND60ND
2021N/A00N/A
2022ND60ND
2023N/A00N/A

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
2019-08-12S190812036-001ND
2019-08-13S190813026-001ND
2019-08-19S190819024-001ND
2020-04-28SMAD0501-01ND
2020-04-28MAD0501-02ND
2020-04-28MAD0501-03ND
2020-08-31SMAI0051-05ND
2020-08-31SMAI0051-06ND
2020-08-31SMAI0051-07ND
2022-06-01SMCF0035-01ND
2022-06-01SMCF0035-02ND
2022-06-01SMCF0035-03ND
2022-12-14SMCL0466-01ND
2022-12-14SMCL0466-02ND
2022-12-14SMCL0466-03ND