Alachlor (Lasso)
Johnson Creek Water Users Association
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
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 3 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 4 | 0 | ND |
| 2022 | ND | 4 | 0 | ND |
| 2023 | ND | 1 | 0 | ND |
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 |
|---|---|---|
| 2019-04-10 | ND | |
| 2019-07-17 | ND | |
| 2019-10-08 | ND | |
| 2021-03-09 | 4097410 | ND |
| 2021-05-10 | 4115309 | ND |
| 2021-09-17 | 4182416 | ND |
| 2021-12-01 | 4215622 | ND |
| 2022-03-07 | 4256934 | ND |
| 2022-05-16 | 4287145 | ND |
| 2022-09-12 | 4356448 | ND |
| 2022-12-06 | 4399958 | ND |
| 2023-03-31 | 4437051 | ND |