Alachlor (Lasso)
City of Tigard
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | N/A | 0 | 0 | N/A |
2015 | ND | 6 | 0 | ND |
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 |
---|---|---|
2015-06-09 | 516001001-S | ND |
2015-06-09 | 516001003-S | ND |
2015-06-09 | 516001002-S | ND |
2015-09-14 | 525700901-S | ND |
2015-09-14 | 525700903-S | ND |
2015-09-14 | 525700902-S | ND |
2017-06-27 | 717800301-S | ND |
2017-06-27 | 717800401-S | ND |
2017-09-13 | 725600601-S | ND |
2017-09-13 | 725600501-S | ND |
2018-06-06 | 815700401-S | ND |
2018-07-24 | 820500301-S | ND |