Alachlor (Lasso)
Houma Water Treatment Service Area
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
14
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 | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | 0.0160 ppb | 2 | 1 | ND - 0.0320 ppb |
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 |
|---|---|---|
| 2018-08-23 | 35413192001 | ND |
| 2018-08-23 | 35413192001 | ND |
| 2019-02-18 | 35449356001 | ND |
| 2019-02-18 | 35449356001 | ND |
| 2019-08-28 | 35494058001 | ND |
| 2019-08-28 | 35494058001 | ND |
| 2020-01-22 | 35526020001 | ND |
| 2020-12-03 | 35596462001 | ND |
| 2021-03-11 | 35619288001 | ND |
| 2021-11-04 | 35675777001 | ND |
| 2022-03-02 | 35701433001 | ND |
| 2022-10-12 | 35753132001 | ND |
| 2023-04-11 | 35791937001 | 0.0320 ppb |
| 2023-12-21 | 35849973001 | ND |