Know Your Environment. Protect Your Health.

Alachlor (Lasso)

Metropolitan District Commission

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

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND70ND
2019N/A00N/A
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

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
2018-06-27CA79476ND
2018-06-27CA79477ND
2018-06-27CA79475ND
2018-09-25CB38504ND
2018-09-25CB38505RND
2018-09-25CB38869ND
2018-09-25CB38505ND
2020-12-08SOC 200600638ND
2020-12-08SOC 200600609ND
2020-12-09SOC 200600592ND
2021-11-23S300107511 300107513ND
2021-11-23S300107593 300107596ND
2021-11-29S300109627 300109629ND
2022-12-15S300287039 300287044ND
2022-12-15S300287062 300287065ND
2022-12-15S300287090 300287093ND
2023-12-05S300456329 300456332ND
2023-12-06S300456308 300456311ND
2023-12-06S300456298 300456301ND