National Drinking Water Database
National Drinking Water Database - Chemical Contaminants
DCPA di acid degradate
Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.
DCPA di acid degradate is a residue of Dacthal (DCPA), an herbicide used for urban, household and agricultural applications.
Detected |
Found above health guidelines |
Found above legal limit |
|
|---|---|---|---|
| States | 3 |
- |
- |
| Water utilities | 28 |
- |
- |
| People Served | 430,497 |
- |
- |
DCPA di acid degradate Exposure by State
Water utilities in 3 states have reported detecting DCPA di acid degradate in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.
| State | Water Suppliers with DCPA di acid degradate contamination | |
|---|---|---|
| Systems | Population | |
| Washington | 22 | 235,892 |
| Minnesota | 4 | 146,205 |
| New York | 2 | 48,400 |
| Total | 28 | 430,497 |
The Most Polluted Communities
28 water utilities reported detecting DCPA di acid degradate in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average DCPA di acid degradate level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Columbia View Water System Burbank, WA | 350 | 5 of 5 | 6.46 ppb (4.75 to 7.97 ppb) |
| 2 | City of Quincy Water Department Quincy, WA | 5,165 | 6 of 6 | 6.36 ppb (0.6 to 10.46 ppb) |
| 3 | Country Corner Mobile Home Park Gig Harbor, WA | 95 | 3 of 3 | 5.87 ppb (5.1 to 6.5 ppb) |
| 4 | WA of Great Neck North Great Neck, NY | 31,400 | 41 of 48 | 4.91 ppb (0 to 12 ppb) |
| 5 | Weiler-Martin Tracts Water Assn Quincy, WA | 775 | 4 of 4 | 3.93 ppb (1.6 to 6.9 ppb) |
| 6 | Sportsman Trailer Park Othello, WA | 150 | 3 of 4 | 2.13 ppb (0 to 3.33 ppb) |
| 7 | City of West Richland West Richland, WA | 11,200 | 1 of 1 | 1.77 ppb (1.77 ppb) |
| 8 | Sage Hills Estates 1 Warden, WA | 38 | 8 of 8 | 1.53 ppb (0.98 to 2.22 ppb) |
| 9 | White Bluff Water Association Pasco, WA | 105 | 2 of 3 | 1.45 ppb (0 to 3 ppb) |
| 10 | Tieton Hills Water Co Yakima, WA | 75 | 6 of 7 | 1.24 ppb (0 to 2.3 ppb) |
Testing Summary for DCPA di acid degradate
| Are tests routinely required for DCPA di acid degradate by federal law? | No |
| Water suppliers reporting tests for DCPA di acid degradate (2004-2009): | 616 of 47,576 |
| Average testing rate for water supplier reporting tests (2004-2009): | 0.3 per year |