Dichlorodifluoromethane
Status: No national drinking water standard exists
Dichlorodifluoromethane (Freon-12) is a refrigerant, solvent and aerosol propellant banned in 2000 under the Montreal Protocol because of its ozone-depleting properties. Freons can cause heart, nervous system and liver damage.
2015:
6
states detected
39
utilities detected
2.4 million
people served
Health concerns for dichlorodifluoromethane
Harm to the liver
Change to the central nervous system
Harm to the heart and blood vessels
States reporting dichlorodifluoromethane in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| California | 16 | 2,078,553 | |
| New York | 12 | 275,291 | |
| Wisconsin | 6 | 12,732 | |
| Missouri | 2 | 12,266 | |
| Maine | 2 | 300 | |
| Delaware | 1 | 93 | |
Utilities with the highest amounts of dichlorodifluoromethane, 2015
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Sugar Tree Club | Newburg, MO | 1 of 1 | 1.42 ppb | 66 |
| San Bernardino City* | San Bernardino, CA | 175 of 276 | 1.40 ppb | 188,931 |
| Island Nursing Home | Deer Isle, ME | 1 of 1 | 1.30 ppb | 240 |
| Clifton Park Water Authority* | Clifton Park, NY | 1 of 1 | 1.000 ppb | 39,710 |
| Adirondack Airport Community | Saranac Lake, NY | 1 of 1 | 1.000 ppb | 90 |
| California Water Service - Livermore | Livermore, CA | 46 of 56 | 0.978 ppb | 56,700 |
| Garden City | Garden City, NY | 13 of 132 | 0.955 ppb | 25,000 |
| California Water Service - Stockton | San Jose, CA | 25 of 55 | 0.850 ppb | 185,346 |
| Altoona Waterworks | Altoona, WI | 2 of 2 | 0.770 ppb | 7,500 |
| California Water Service (CWS) - Los Altos Suburban | San Jose, CA | 1 of 19 | 0.682 ppb | 68,404 |
| Sunny Gables- Glenburn Housing | Bangor, ME | 1 of 1 | 0.670 ppb | 60 |
| Stage Village Mobile Home Community | Dagsboro, DE | 1 of 1 | 0.660 ppb | 93 |
| Mount Baldy Homeowners Association | Mt. Baldy, CA | 3 of 3 | 0.607 ppb | 350 |
| City of Fresno* | Fresno, CA | 13 of 277 | 0.402 ppb | 522,352 |
| Tainter Woods Condominiums | Colfax, WI | 1 of 1 | 0.390 ppb | 85 |
| San Gabriel Valley Water Company - Fontana* | Fontana, CA | 70 of 169 | 0.373 ppb | 213,209 |
| Fruitridge Vista Water Company | Sacramento, CA | 5 of 12 | 0.333 ppb | 15,000 |
| Abbotsford Waterworks | Abbotsford, WI | 1 of 1 | 0.310 ppb | 1,956 |
| Boone County PWSD 9* | Columbia, MO | 1 of 5 | 0.282 ppb | 12,200 |
| Withee Waterworks* | Withee, WI | 1 of 1 | 0.280 ppb | 504 |
| Colby Waterworks | Colby, WI | 2 of 2 | 0.275 ppb | 1,751 |
| Mineola | Mineola, NY | 11 of 93 | 0.188 ppb | 20,600 |
| Hempstead | Hempstead, NY | 6 of 60 | 0.106 ppb | 56,000 |
| City of Modesto | Modesto, CA | 3 of 55 | 0.0929 ppb | 212,000 |
| Hicksville WD | Hicksville, NY | 22 of 170 | 0.0852 ppb | 47,810 |
| Roslyn WD* | Roslyn, NY | 1 of 8 | 0.0775 ppb | 18,000 |
| West Hempstead WD* | West Hempstead, NY | 1 of 22 | 0.0409 ppb | 33,531 |
| WA of Great Neck North | Great Neck, NY | 4 of 132 | 0.0229 ppb | 31,400 |
| City of Anaheim | Anaheim, CA | 1 of 54 | 0.0148 ppb | 450,000 |
* 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 Dichlorodifluoromethane, but it likely has the contaminant in its water supply.
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| San Bernardino City* | San Bernardino, CA | 175 of 276 | 1.40 ppb | 188,931 |
| Clifton Park Water Authority* | Clifton Park, NY | 1 of 1 | 1.000 ppb | 39,710 |
| California Water Service - Livermore | Livermore, CA | 46 of 56 | 0.978 ppb | 56,700 |
| Garden City | Garden City, NY | 13 of 132 | 0.955 ppb | 25,000 |
| California Water Service - Stockton | San Jose, CA | 25 of 55 | 0.850 ppb | 185,346 |
| California Water Service (CWS) - Los Altos Suburban | San Jose, CA | 1 of 19 | 0.682 ppb | 68,404 |
| City of Fresno* | Fresno, CA | 13 of 277 | 0.402 ppb | 522,352 |
| San Gabriel Valley Water Company - Fontana* | Fontana, CA | 70 of 169 | 0.373 ppb | 213,209 |
| Fruitridge Vista Water Company | Sacramento, CA | 5 of 12 | 0.333 ppb | 15,000 |
| Boone County PWSD 9* | Columbia, MO | 1 of 5 | 0.282 ppb | 12,200 |
| Mineola | Mineola, NY | 11 of 93 | 0.188 ppb | 20,600 |
| Hempstead | Hempstead, NY | 6 of 60 | 0.106 ppb | 56,000 |
| City of Modesto | Modesto, CA | 3 of 55 | 0.0929 ppb | 212,000 |
| Hicksville WD | Hicksville, NY | 22 of 170 | 0.0852 ppb | 47,810 |
| Roslyn WD* | Roslyn, NY | 1 of 8 | 0.0775 ppb | 18,000 |
| West Hempstead WD* | West Hempstead, NY | 1 of 22 | 0.0409 ppb | 33,531 |
| WA of Great Neck North | Great Neck, NY | 4 of 132 | 0.0229 ppb | 31,400 |
| City of Anaheim | Anaheim, CA | 1 of 54 | 0.0148 ppb | 450,000 |
* 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 Dichlorodifluoromethane, but it likely has the contaminant in its water supply.