Alachlor (Lasso)
Concord Water Department
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
16
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 13 | 0 | ND |
| 2017 | ND | 1 | 0 | ND |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 | Result |
|---|---|
| 2016-01-07 | ND |
| 2016-01-07 | ND |
| 2016-02-04 | ND |
| 2016-02-16 | ND |
| 2016-02-18 | ND |
| 2016-04-21 | ND |
| 2016-07-26 | ND |
| 2016-08-10 | ND |
| 2016-08-18 | ND |
| 2016-08-25 | ND |
| 2016-08-25 | ND |
| 2016-09-13 | ND |
| 2016-09-29 | ND |
| 2017-10-04 | ND |
| 2019-01-15 | ND |
| 2019-07-11 | ND |