DCPA mono- and di-acid degradates
Norwalk Water Department
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.
13
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 | ND | 6 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2015-04-23 | 9588-002-1041 | ND |
| 2015-04-23 | 9588-003-1024 | ND |
| 2015-04-23 | 9588-012-0947 | ND |
| 2015-07-30 | 9588-002-1044 | ND |
| 2015-07-30 | 9588-003-1015 | ND |
| 2015-07-30 | 9588-012-0928 | ND |
| 2018-04-11 | 9588-002-0953 | ND |
| 2018-04-11 | 9588-003-0930 | ND |
| 2018-07-25 | 9588-002-1000 | ND |
| 2018-07-25 | 9588-003-0935 | ND |
| 2019-05-24 | 9588-012-0920 | ND |
| 2019-07-25 | 9588-012-0930 | ND |
| 2019-10-25 | 9588-012-0930 | ND |