DCPA di-acid degradate
Othello Water Department
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.
19
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 | 1.17 ppb | 2 | 2 | 0.280 ppb - 2.05 ppb |
| 2019 | 0.284 ppb | 4 | 3 | ND - 0.490 ppb |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.180 ppb | 8 | 5 | ND - 0.500 ppb |
| 2022 | 0.0850 ppb | 4 | 2 | ND - 0.200 ppb |
| 2023 | ND | 1 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-03-15 | 0.280 ppb | |
| 2018-12-13 | 2.05 ppb | |
| 2019-04-17 | 0.490 ppb | |
| 2019-04-17 | 0.430 ppb | |
| 2019-04-22 | ND | |
| 2019-07-08 | 0.215 ppb | |
| 2021-03-31 | 4102004 | 0.170 ppb |
| 2021-04-12 | 4101994 | 0.330 ppb |
| 2021-06-10 | 4129201 | 0.340 ppb |
| 2021-06-10 | 4129202 | 0.500 ppb |
| 2021-08-11 | 4171845 | ND |
| 2021-08-11 | 4169056 | 0.103 ppb |
| 2021-10-13 | 4202797 | ND |
| 2021-10-13 | 4202796 | ND |
| 2022-03-15 | 4263811 | ND |
| 2022-04-12 | 4273267 | ND |
| 2022-06-02 | 4304316 | 0.200 ppb |
| 2022-09-06 | 4357108 | 0.140 ppb |
| 2023-09-11 | 4531622 | ND |