Alachlor (Lasso)
Coulterville
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
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-02-26 | 8024311-01 | ND |
| 2018-04-03 | 8041082-01 | ND |
| 2019-04-23 | 9045255-01 | ND |
| 2020-04-13 | 0042894-01 | ND |
| 2021-04-11 | ED02422-01 | ND |
| 2022-05-01 | FE00388-01 | ND |
| 2023-06-06 | GF01788-01 | ND |
| 2023-10-16 | GJ03461-01 | ND |