Alachlor (Lasso)
Willowbrook Development
NOTE: Willowbrook Development purchases water from Johnston County - West which is required to test for alachlor (lasso). Sample information shown below was taken by Johnston County - West.
Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.
Samples
Samples exceeding legal limit (MCL)
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 | 1 | 0 | ND |
| 2016 | ND | 2 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 4 | 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
NOTE: Willowbrook Development purchases water from Johnston County - West which is required to test for alachlor (lasso). Sample information shown below was taken by Johnston County - West.
| Date | Lab ID | Result |
|---|---|---|
| 2016-07-19 | 8545-071916-EP1S | ND |
| 2016-10-25 | 8545-102516-EP1S | ND |
| 2018-01-23 | 8545-012318-EP1S | ND |
| 2018-04-10 | 8545-041018-EP1S | ND |
| 2018-07-24 | 8545-072418-EP1S | ND |
| 2018-10-18 | 8545-101818-EP1S | ND |
| 2019-01-22 | 8545-012219-EP1S | ND |
| 2019-04-23 | 8545-042319-EP1S | ND |
| 2019-07-23 | 8545-072319-EP1S | ND |
| 2019-10-22 | 8545-102219-EP1S | ND |