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EWG's Tap Water Database — 2019 UPDATE

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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.

2015-2017:

FOUND

13

states detected

66

utilities detected

3.3 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 UtilitiesPeople Served
California222,545,582
New York16621,981
Ohio534,658
Wisconsin922,090
Idaho114,125
Missouri212,266
Washington48,130
Nebraska11,171
Maine2300
New Hampshire1228
Delaware193
Vermont145
Rhode Island133
MORE
LESS

Utilities with the highest amounts of dichlorodifluoromethane, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Sugar Tree ClubNewburg, MO1 of 11.42 ppb66
Altoona WaterworksAltoona, WI9 of 91.40 ppb7,345
San Bernardino City*San Bernardino, CA470 of 7831.33 ppb188,931
Island Nursing HomeDeer Isle, ME1 of 11.30 ppb240
Garden CityGarden City, NY41 of 3850.984 ppb46,000
Birch Hill Water SystemCharlestown, VT1 of 10.900 ppb45
Meridian Heights Water DistrictOlympia, WA1 of 10.900 ppb126
Stratford WaterworksStratford, WI3 of 30.890 ppb1,651
California Water Service - LivermoreLivermore, CA119 of 1590.855 ppb56,700
Woodland, City OfWoodland, WA1 of 60.783 ppb5,315
California Water Service - StocktonSan Jose, CA67 of 1520.773 ppb185,346
Adirondack Airport CommunitySaranac Lake, NY3 of 40.700 ppb90
Sunny Gables- Glenburn HousingBangor, ME1 of 10.670 ppb60
Mount Baldy Homeowners AssociationMt. Baldy, CA3 of 30.607 ppb350
Hemlock VillageFoster, RI2 of 20.530 ppb33
City of ChubbuckChubbuck, ID1 of 10.520 ppb14,125
Stage Village Mobile Home CommunityDagsboro, DE2 of 30.417 ppb93
Colby WaterworksColby, WI8 of 80.391 ppb1,829
Tainter Woods CondominiumsColfax, WI1 of 10.390 ppb85
City of Fresno*Fresno, CA46 of 9560.384 ppb522,352
Fcsa #39 A&bFresno, CA46 of 9560.384 ppb465
Rib Mountain Sanitary DistrictWausau, WI2 of 20.370 ppb5,850
Abbotsford WaterworksAbbotsford, WI4 of 40.370 ppb1,956
Fruitridge Vista Water CompanySacramento, CA17 of 450.362 ppb15,000
San Gabriel Valley Water Company - FontanaFontana, CA189 of 5240.336 ppb213,209
Progressive Flat Water AssociationTonasket, WA2 of 30.333 ppb150
Okanogan Water Department, City Of*Okanogan, WA2 of 30.333 ppb2,539
Tenney Brook IIAshland, NH2 of 40.325 ppb228
Crandon WaterworksCrandon, WI1 of 10.300 ppb1,958
Boone County PWSD 9Columbia, MO1 of 50.282 ppb12,200
California Water Service (CWS) - Los Altos SuburbanSan Jose, CA2 of 680.281 ppb68,404
Stromsburg, City ofStromsburg, NE2 of 50.276 ppb1,171
Withee Waterworks*Withee, WI2 of 20.265 ppb480
MineolaMineola, NY50 of 2550.240 ppb20,600
Roslyn WD*Roslyn, NY7 of 430.127 ppb18,000
Glenwood Water DistrictGlenwood Landing, NY7 of 430.127 ppb1,000
City of Upland*Upland, CA1 of 100.120 ppb78,791
Carlisle City Public Water SystemCarlisle, OH1 of 50.112 ppb4,897
Franklin Public Water System*Franklin, OH1 of 50.112 ppb11,396
City of AnaheimAnaheim, CA13 of 1710.0942 ppb450,000
HempsteadHempstead, NY19 of 1790.0925 ppb56,000
City of ModestoModesto, CA7 of 1670.0749 ppb212,000
Round Lake Village (Clifton Park Water Authority)Round Lake, NY1 of 150.0667 ppb650
Clifton Park Water Authority*Clifton Park, NY1 of 150.0667 ppb39,710
Hicksville WDHicksville, NY48 of 6820.0647 ppb48,000
Cathedral Gardens Water DistrictWest Hempstead, NY6 of 790.0539 ppb1,500
West Hempstead WD*West Hempstead, NY6 of 790.0539 ppb33,531
Milford City Public Water SystemMilford, OH1 of 190.0263 ppb6,400
East Orange County Water District - RzOrange, CA1 of 190.0263 ppb3,000
Wright-Patterson AFB Area B PWSWright Patterson Afb, OH1 of 650.0195 ppb11,034

* 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.

UtilityLocationTestsAverage levelPeople served
San Bernardino City*San Bernardino, CA470 of 7831.33 ppb188,931
Garden CityGarden City, NY41 of 3850.984 ppb46,000
California Water Service - LivermoreLivermore, CA119 of 1590.855 ppb56,700
California Water Service - StocktonSan Jose, CA67 of 1520.773 ppb185,346
City of ChubbuckChubbuck, ID1 of 10.520 ppb14,125
City of Fresno*Fresno, CA46 of 9560.384 ppb522,352
Fruitridge Vista Water CompanySacramento, CA17 of 450.362 ppb15,000
San Gabriel Valley Water Company - FontanaFontana, CA189 of 5240.336 ppb213,209
Boone County PWSD 9Columbia, MO1 of 50.282 ppb12,200
California Water Service (CWS) - Los Altos SuburbanSan Jose, CA2 of 680.281 ppb68,404
MineolaMineola, NY50 of 2550.240 ppb20,600
Roslyn WD*Roslyn, NY7 of 430.127 ppb18,000
City of Upland*Upland, CA1 of 100.120 ppb78,791
Franklin Public Water System*Franklin, OH1 of 50.112 ppb11,396
City of AnaheimAnaheim, CA13 of 1710.0942 ppb450,000
HempsteadHempstead, NY19 of 1790.0925 ppb56,000
City of ModestoModesto, CA7 of 1670.0749 ppb212,000
Clifton Park Water Authority*Clifton Park, NY1 of 150.0667 ppb39,710
Hicksville WDHicksville, NY48 of 6820.0647 ppb48,000
West Hempstead WD*West Hempstead, NY6 of 790.0539 ppb33,531
Wright-Patterson AFB Area B PWSWright Patterson Afb, OH1 of 650.0195 ppb11,034
Jurupa Community Services District*Jurupa Valley, CA2 of 640.0181 ppb106,907
WA of Great Neck NorthGreat Neck, NY9 of 4470.0145 ppb31,400
South Farmingdale WDFarmingdale, NY1 of 3080.00520 ppb44,700
New York American Water - LynbrookMerrick, NY2 of 4810.00252 ppb220,000
Jericho Water DistrictSyosset, NY1 of 6320.000854 ppb58,000

* 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.