DCPA di-acid degradate
City of Spokane
DCPA di-acid degradate is a residue 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.
14
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 | ND | 7 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 4 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-07-17 | ND | |
| 2018-07-17 | ND | |
| 2018-07-17 | ND | |
| 2018-07-17 | ND | |
| 2018-10-30 | ND | |
| 2018-10-30 | ND | |
| 2018-10-30 | ND | |
| 2021-07-27 | 4195381 | ND |
| 2021-07-27 | 4195375 | ND |
| 2021-07-27 | 4195364 | ND |
| 2021-07-27 | 4195370 | ND |
| 2023-07-25 | 4507786 | ND |
| 2023-07-25 | 4507774 | ND |
| 2023-07-25 | 4507780 | ND |