DCPA mono- and di-acid degradates
California Water Service Company Oak Hills
DCPA degradates are residues of the herbicide dacthal, or DCPA, which is used for urban, household and agricultural applications. Dacthal is a possible human carcinogen whose use was limited by the EPA in 2005 due to concerns about water contamination.
5
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 | N/A | 0 | 0 | N/A |
| 2016 | 0.110 ppb | 2 | 1 | ND - 0.220 ppb |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-06-22 | 9590-008-0932 | ND |
| 2016-09-19 | 9590-003-1002 | 0.220 ppb |
| 2018-03-27 | 9590-001-1038 | ND |
| 2019-06-19 | 9590-008-1317 | ND |
| 2019-09-12 | 9590-003-1408 | ND |