Alachlor (Lasso)
City of Pleasanton
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
12
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | ND | 6 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 2 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2014-06-17 | 5810-001-0910 | ND |
| 2014-06-17 | 5810-002-1000 | ND |
| 2014-06-17 | 5810-004-0750 | ND |
| 2014-12-09 | 5810-001-1010 | ND |
| 2014-12-09 | 5810-002-0915 | ND |
| 2014-12-09 | 5810-004-0815 | ND |
| 2017-06-22 | 5810-001-0850 | ND |
| 2017-06-22 | 5810-002-0940 | ND |
| 2017-06-22 | 5810-004-0800 | ND |
| 2017-12-07 | 5810-004-1100 | ND |
| 2018-01-08 | 5810-002-0834 | ND |
| 2018-09-26 | 1610-001-1055 | ND |