Alachlor (Lasso)
Madison, City of
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
19
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 | 3 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | ND | 4 | 0 | ND |
| 2018 | ND | 7 | 0 | ND |
| 2019 | ND | 3 | 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 |
|---|---|---|
| 2015-10-27 | 391523 | ND |
| 2015-10-27 | 391524 | ND |
| 2015-10-27 | 391525 | ND |
| 2016-08-22 | ND | |
| 2016-10-25 | ND | |
| 2017-03-20 | ND | |
| 2017-05-09 | ND | |
| 2017-07-17 | ND | |
| 2017-10-11 | ND | |
| 2018-01-09 | 531829 | ND |
| 2018-04-03 | 543608 | ND |
| 2018-07-11 | 560971 | ND |
| 2018-10-24 | 577026 | ND |
| 2018-11-13 | 577367 | ND |
| 2018-11-13 | 577368 | ND |
| 2018-11-27 | 577366 | ND |
| 2019-01-23 | 590567 | ND |
| 2019-04-16 | 602867 | ND |
| 2019-07-15 | 621126 | ND |