Alachlor (Lasso)
Loudoun Water - Central System
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 |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 1 | 0 | ND |
2015 | N/A | 0 | 0 | N/A |
2016 | N/A | 0 | 0 | N/A |
2017 | ND | 1 | 0 | ND |
2018 | ND | 2 | 0 | ND |
2019 | ND | 4 | 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 |
---|---|---|
2014-07-23 | 92210765001_SVO | ND |
2017-08-15 | 3760317 | ND |
2018-08-13 | 92395631003_SVO | ND |
2018-10-17 | 92403946001_SVO | ND |
2019-01-15 | 92414268002_SVO | ND |
2019-05-22 | 92430330001_SVO | ND |
2019-08-27 | 92443218004_SVO | ND |
2019-10-15 | 92450083001_SVO | ND |