Alachlor (Lasso)
City of Tacoma
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
11
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 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 8 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | N/A | 0 | 0 | N/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 |
|---|---|---|
| 2021-06-21 | 4149653 | ND |
| 2021-06-21 | 4149656 | ND |
| 2021-06-21 | 4149654 | ND |
| 2021-06-30 | 4143018 | ND |
| 2021-06-30 | 4143019 | ND |
| 2021-07-21 | 4159386 | ND |
| 2021-07-21 | 4159385 | ND |
| 2021-07-22 | 4159384 | ND |
| 2022-02-01 | 4259184 | ND |
| 2022-09-15 | 4370819 | ND |
| 2022-11-15 | 4383777 | ND |