Alachlor (Lasso)
City of Ontario
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 | ND | 2 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 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 | Lab ID | Result |
|---|---|---|
| 2014-06-24 | 140625078001-S | ND |
| 2014-08-06 | 1408276001-S | ND |
| 2017-05-03 | 1705209001-S | ND |
| 2017-08-02 | 1708190001-S | ND |
| 2018-07-11 | 1807589002-S | ND |
| 2018-10-15 | 1810638001-S | ND |
| 2019-07-16 | 1907762002-S | ND |
| 2019-10-09 | 1910488-S | ND |