Alachlor (Lasso)
City of San Juan Capistrano
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 |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | ND | 2 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 1 | 0 | ND |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 4 | 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 | Lab ID | Result |
|---|---|---|
| 2015-02-10 | 9590-010-1111 | ND |
| 2015-05-19 | 9590-010-0808 | ND |
| 2017-02-08 | 9590-010-0815 | ND |
| 2018-05-10 | 9590-010-1225 | ND |
| 2019-01-09 | 5810-010-0652 | ND |
| 2019-03-27 | 5810-010-0715 | ND |
| 2019-07-08 | 5810-010-1215 | ND |
| 2019-10-15 | 5810-010-1230 | ND |