Dacthal
Status: No national drinking water standard exists
Dacthal is a weedkiller classified by the Environmental Protection Agency as a possible human carcinogen, and prohibited for use in Europe since 2009.
2017-2019:
5
states detected
23
utilities detected
530,000
people served
Health concerns for dacthal
Cancer
Change to the thyroid
Change to the liver
States reporting dacthal in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| New York | 6 | 321,200 | |
| Rhode Island | 10 | 144,165 | |
| Michigan | 5 | 53,012 | |
| Delaware | 1 | 11,180 | |
| Washington | 1 | 553 | |
Filtering technologies that reduce dacthal
Activated Carbon
Reverse Osmosis
Utilities with the highest amounts of dacthal, 2017-2019
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| City of Mendota | Mendota, CA | 1 of 1 | 60.0 ppb | 11,104 |
| Valle Lindo Homes | Walla Walla, WA | 1 of 1 | 10.4 ppb | 570 |
| WA of Great Neck North | Great Neck, NY | 59 of 70 | 4.96 ppb | 31,400 |
| Kingston Water District | West Kingston, RI | 2 of 7 | 4.43 ppb | 3,968 |
| Hicksville WD | Hicksville, NY | 1 of 2 | 3.45 ppb | 48,000 |
| Sands Point | Port Washington, NY | 55 of 83 | 3.37 ppb | 2,800 |
| Briarcliff Homeowners Association | West Bloomfield, MI | 1 of 1 | 2.00 ppb | 483 |
| Pleasant Lake Mobile Home Court | Ann Arbor, MI | 1 of 1 | 2.00 ppb | 145 |
| Harrison-ray-burbank Water System | Pasco, WA | 1 of 1 | 1.60 ppb | 656 |
| Arlenes Addition | Burbank, WA | 2 of 2 | 1.26 ppb | 480 |
| North Kingstown* | North Kingstown, RI | 8 of 44 | 1.13 ppb | 23,568 |
| New York American Water - Lynbrook | Merrick, NY | 137 of 288 | 0.742 ppb | 220,000 |
| South Kingstown-middlebridge | Wakefield, RI | 8 of 28 | 0.704 ppb | 576 |
| Narragansett Water System-point Judith* | Narragansett, RI | 8 of 28 | 0.704 ppb | 8,189 |
| United Water Rhode Island* | Wakefield, RI | 8 of 28 | 0.704 ppb | 21,000 |
| Glenwood Water District | Glenwood Landing, NY | 19 of 43 | 0.607 ppb | 1,000 |
| Roslyn WD* | Roslyn, NY | 19 of 43 | 0.607 ppb | 18,000 |
| Long Neck Water Company | Long Neck, DE | 1 of 2 | 0.550 ppb | 11,180 |
| Portage | Coldwater, MI | 9 of 23 | 0.435 ppb | 46,292 |
| Meadow Streams Estates | Battle Creek, MI | 1 of 3 | 0.333 ppb | 293 |
| University of Rhode Island | Kingston, RI | 4 of 11 | 0.243 ppb | 19,354 |
| White Lake Township | White Lake, MI | 1 of 5 | 0.200 ppb | 5,799 |
| Green Tank Irr District 11 | Walla Walla, WA | 2 of 2 | 0.140 ppb | 553 |
| Portsmouth Water & Fire District | Portsmouth, RI | 4 of 32 | 0.0844 ppb | 16,864 |
| City of Newport* | Newport, RI | 4 of 32 | 0.0844 ppb | 42,000 |
| Naval Station, Newport | Newport, RI | 4 of 32 | 0.0844 ppb | 7,871 |
| United States Navy -fort Adams | Newport, RI | 4 of 32 | 0.0844 ppb | 318 |
| Kent County Water Authority* | West Warwick, RI | 1 of 22 | 0.0182 ppb | 88,780 |
| Warwick-potowomut | Warwick, RI | 1 of 22 | 0.0182 ppb | 2,357 |
| Centre of New England Hopkins Hill Rd. | Rumford, RI | 1 of 22 | 0.0182 ppb | 317 |
| Centre of New England Boulevard | Rumford, RI | 1 of 22 | 0.0182 ppb | 9,999 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Dacthal, but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| City of Mendota | Mendota, CA | 1 of 1 | 60.0 ppb | 11,104 |
| WA of Great Neck North | Great Neck, NY | 59 of 70 | 4.96 ppb | 31,400 |
| Hicksville WD | Hicksville, NY | 1 of 2 | 3.45 ppb | 48,000 |
| North Kingstown* | North Kingstown, RI | 8 of 44 | 1.13 ppb | 23,568 |
| New York American Water - Lynbrook | Merrick, NY | 137 of 288 | 0.742 ppb | 220,000 |
| United Water Rhode Island* | Wakefield, RI | 8 of 28 | 0.704 ppb | 21,000 |
| Roslyn WD* | Roslyn, NY | 19 of 43 | 0.607 ppb | 18,000 |
| Long Neck Water Company | Long Neck, DE | 1 of 2 | 0.550 ppb | 11,180 |
| Portage | Coldwater, MI | 9 of 23 | 0.435 ppb | 46,292 |
| University of Rhode Island | Kingston, RI | 4 of 11 | 0.243 ppb | 19,354 |
| City of Newport* | Newport, RI | 4 of 32 | 0.0844 ppb | 42,000 |
| Portsmouth Water & Fire District | Portsmouth, RI | 4 of 32 | 0.0844 ppb | 16,864 |
| Kent County Water Authority* | West Warwick, RI | 1 of 22 | 0.0182 ppb | 88,780 |
* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report Dacthal, but it likely has the contaminant in its water supply.