Metolachlor
West Delta Water Supply Corporation
Metolachlor is a herbicide applied on corn, soybeans and other crops. The EPA has classified metolachlor as a possible human carcinogen.
6
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 |
|---|---|---|---|---|
| 2018 | 0.600 ppb | 1 | 1 | 0.600 ppb |
| 2019 | 4.50 ppb | 1 | 1 | 4.50 ppb |
| 2020 | 5.40 ppb | 1 | 1 | 5.40 ppb |
| 2021 | 2.20 ppb | 1 | 1 | 2.20 ppb |
| 2022 | 0.300 ppb | 1 | 1 | 0.300 ppb |
| 2023 | 0.600 ppb | 1 | 1 | 0.600 ppb |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-06-21 | Q1824881009 | 0.600 ppb |
| 2019-08-26 | Q1959454001 | 4.50 ppb |
| 2020-05-28 | Q2021184003 | 5.40 ppb |
| 2021-09-20 | Q2125612001 | 2.20 ppb |
| 2022-12-05 | Q2236037003 | 0.300 ppb |
| 2023-09-25 | Q2341197003 | 0.600 ppb |