DCPA mono- and di-acid degradates
City of Petaluma
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.
12
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | ND | 1 | 0 | ND |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2016-12-07 | 1644-055-1220 | ND |
| 2018-06-06 | 1644-009-0830 | ND |
| 2018-06-06 | 1644-010-0845 | ND |
| 2018-06-06 | 1644-030-1150 | ND |
| 2018-06-06 | 1644-031-1020 | ND |
| 2018-11-07 | 1644-032-1030 | ND |
| 2018-11-07 | 1644-057-1025 | ND |
| 2019-03-13 | 1644-012-0844 | ND |
| 2019-03-13 | 1644-026-1008 | ND |
| 2019-03-13 | 1644-027-0910 | ND |
| 2019-03-13 | 1644-051-1058 | ND |
| 2019-03-13 | 1644-055-1108 | ND |