Alachlor (Lasso)
Pagosa Area WSD
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
28
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 | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | ND | 8 | 0 | ND |
| 2018 | ND | 11 | 0 | ND |
| 2019 | ND | 5 | 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 |
|---|---|
| 2014-04-15 | ND |
| 2014-04-15 | ND |
| 2014-08-12 | ND |
| 2014-08-12 | ND |
| 2017-01-24 | ND |
| 2017-01-24 | ND |
| 2017-02-01 | ND |
| 2017-02-01 | ND |
| 2017-06-05 | ND |
| 2017-06-05 | ND |
| 2017-08-14 | ND |
| 2017-08-14 | ND |
| 2018-01-31 | ND |
| 2018-01-31 | ND |
| 2018-01-31 | ND |
| 2018-01-31 | ND |
| 2018-05-16 | ND |
| 2018-07-17 | ND |
| 2018-07-17 | ND |
| 2018-07-17 | ND |
| 2018-08-13 | ND |
| 2018-10-17 | ND |
| 2018-10-17 | ND |
| 2019-06-18 | ND |
| 2019-06-18 | ND |
| 2019-08-13 | ND |
| 2019-11-25 | ND |
| 2019-11-25 | ND |