Chlorodifluoromethane
Status: No national drinking water standard exists
2017-2019:
FOUND
2
states detected
27
utilities detected
2.4 million
people served
Health concerns for chlorodifluoromethane
Harm to the liver
Change to the central nervous system
Harm to the heart and blood vessels
States reporting chlorodifluoromethane in drinking water
| UTILITIES WITH CONTAMINATION | |||
|---|---|---|---|
| State | Utilities | People Served | |
| New York | 26 | 2,006,114 | |
| Kansas | 1 | 443,000 | |
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Utilities with the highest amounts of chlorodifluoromethane, 2017-2019
ALL UTILITIES
LARGE UTILITIES
| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Hempstead | Hempstead, NY | 100 of 250 | 2.97 ppb | 56,000 |
| Hicksville WD | Hicksville, NY | 68 of 280 | 2.68 ppb | 48,000 |
| Fridley | Fridley, MN | 1 of 3 | 1.93 ppb | 27,853 |
| Franklin Square WD | Franklin Square, NY | 69 of 174 | 1.69 ppb | 20,000 |
| Water District 1 of Johnson County | Kansas City, KS | 1 of 1 | 1.40 ppb | 443,000 |
| Glen Cove City | Glen Cove, NY | 165 of 477 | 1.23 ppb | 28,000 |
| Jericho Water District | Syosset, NY | 130 of 331 | 0.740 ppb | 58,000 |
| Garden City | Garden City, NY | 19 of 195 | 0.615 ppb | 46,000 |
| Marshall | Marshall, MN | 1 of 2 | 0.355 ppb | 13,680 |
| Old Westbury | Old Westbury, NY | 3 of 43 | 0.247 ppb | 4,700 |
| Cathedral Gardens Water District | West Hempstead, NY | 38 of 127 | 0.243 ppb | 1,500 |
| West Hempstead WD* | West Hempstead, NY | 38 of 127 | 0.243 ppb | 33,531 |
| East Williston | East Williston, NY | 10 of 30 | 0.234 ppb | 2,503 |
| Williston Park* | Williston Park, NY | 10 of 30 | 0.234 ppb | 10,072 |
| Roslyn WD* | Roslyn, NY | 12 of 46 | 0.230 ppb | 18,000 |
| Glenwood Water District | Glenwood Landing, NY | 12 of 46 | 0.230 ppb | 1,000 |
| Mineola | Mineola, NY | 12 of 114 | 0.182 ppb | 20,600 |
| WA of Great Neck North | Great Neck, NY | 58 of 325 | 0.163 ppb | 31,400 |
| New York American Water - Lynbrook | Merrick, NY | 43 of 311 | 0.117 ppb | 220,000 |
| Albertson WD | Roslyn Heights, NY | 3 of 114 | 0.0287 ppb | 13,500 |
| Blaine* | Blaine, MN | 1 of 7 | 0.0171 ppb | 66,000 |
| St James WD | St James, NY | 3 of 4 | 0.0126 ppb | 10,587 |
| Stony Brook Water District | Hauppauge, NY | 3 of 4 | 0.0126 ppb | 4,836 |
| Greenport Village | Greenport, NY | 3 of 4 | 0.0126 ppb | 2,050 |
| Smithtown WD | Kings Park, NY | 3 of 4 | 0.0126 ppb | 19,635 |
| Suffolk County Water Authority* | Bayshore, NY | 3 of 4 | 0.0126 ppb | 1,100,000 |
| Plandome | Plandome, NY | 1 of 85 | 0.00671 ppb | 1,600 |
| Manhasset Lakeville WD* | Great Neck, NY | 1 of 85 | 0.00671 ppb | 44,600 |
| Bethpage WD | Bethpage, NY | 2 of 356 | 0.00379 ppb | 33,000 |
| New York American Water - Merrick | Merrick, NY | 1 of 217 | 0.00249 ppb | 177,000 |
* 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 Chlorodifluoromethane, but it likely has the contaminant in its water supply.
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| Utility | Location | Tests | Average level | People served |
|---|---|---|---|---|
| Hempstead | Hempstead, NY | 100 of 250 | 2.97 ppb | 56,000 |
| Hicksville WD | Hicksville, NY | 68 of 280 | 2.68 ppb | 48,000 |
| Fridley | Fridley, MN | 1 of 3 | 1.93 ppb | 27,853 |
| Franklin Square WD | Franklin Square, NY | 69 of 174 | 1.69 ppb | 20,000 |
| Water District 1 of Johnson County | Kansas City, KS | 1 of 1 | 1.40 ppb | 443,000 |
| Glen Cove City | Glen Cove, NY | 165 of 477 | 1.23 ppb | 28,000 |
| Jericho Water District | Syosset, NY | 130 of 331 | 0.740 ppb | 58,000 |
| Garden City | Garden City, NY | 19 of 195 | 0.615 ppb | 46,000 |
| Marshall | Marshall, MN | 1 of 2 | 0.355 ppb | 13,680 |
| West Hempstead WD* | West Hempstead, NY | 38 of 127 | 0.243 ppb | 33,531 |
| Williston Park* | Williston Park, NY | 10 of 30 | 0.234 ppb | 10,072 |
| Roslyn WD* | Roslyn, NY | 12 of 46 | 0.230 ppb | 18,000 |
| Mineola | Mineola, NY | 12 of 114 | 0.182 ppb | 20,600 |
| WA of Great Neck North | Great Neck, NY | 58 of 325 | 0.163 ppb | 31,400 |
| New York American Water - Lynbrook | Merrick, NY | 43 of 311 | 0.117 ppb | 220,000 |
| Albertson WD | Roslyn Heights, NY | 3 of 114 | 0.0287 ppb | 13,500 |
| Blaine* | Blaine, MN | 1 of 7 | 0.0171 ppb | 66,000 |
| St James WD | St James, NY | 3 of 4 | 0.0126 ppb | 10,587 |
| Smithtown WD | Kings Park, NY | 3 of 4 | 0.0126 ppb | 19,635 |
| Suffolk County Water Authority* | Bayshore, NY | 3 of 4 | 0.0126 ppb | 1,100,000 |
| Manhasset Lakeville WD* | Great Neck, NY | 1 of 85 | 0.00671 ppb | 44,600 |
| Bethpage WD | Bethpage, NY | 2 of 356 | 0.00379 ppb | 33,000 |
| New York American Water - Merrick | Merrick, NY | 1 of 217 | 0.00249 ppb | 177,000 |
* 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 Chlorodifluoromethane, but it likely has the contaminant in its water supply.