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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

Status: No national drinking water standard exists

 

Chlorodifluoromethane (Freon 22) 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.

2013-2019:

FOUND

37

states detected

450

utilities detected

30 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 UtilitiesPeople Served
California8211,600,312
Florida525,051,034
New York232,244,059
Colorado412,049,949
Arizona181,645,983
Washington9632,171
Illinois24535,400
New Jersey9531,095
Virginia7525,020
Texas18490,438
Pennsylvania30476,576
Delaware3339,700
Ohio7335,022
Kansas22304,266
Indiana4269,037
Massachusetts14248,289
Hawaii3241,422
Michigan7233,142
Iowa6218,010
Minnesota6212,642
Utah5206,333
Missouri3157,312
Wisconsin7143,200
Tennessee6113,966
Nebraska9113,616
Rhode Island4101,453
Georgia897,949
North Carolina694,218
Oklahoma290,850
South Carolina575,783
Idaho275,560
South Dakota273,308
New Mexico138,936
Oregon137,505
Nevada120,451
Alaska118,222
Vermont24,656
MORE
LESS

Utilities with the highest amounts of chlorodifluoromethane, 2013-2019

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
City of Newman Water DepartmentNewman, CA4 of 71.98 ppb10,586
FridleyFridley, MN2 of 61.67 ppb27,853
City of Arlington*Arlington, TX2 of 71.26 ppb383,950
Franklin Square WDFranklin Square, NY4 of 61.19 ppb20,000
Scotts Valley Water DistrictScotts Valley, CA2 of 80.913 ppb10,509
Pcud-florida Estates (east Pasco)New Port Richey, FL4 of 140.843 ppb575
City of Zephyrhills*Zephyrhills, FL4 of 140.843 ppb23,097
Perkasie Regional AuthoritySellersville, PA4 of 100.820 ppb15,000
Aqua Pa HatboroBryn Mawr, PA8 of 150.724 ppb12,901
Rowley Water DepartmentRowley, MA2 of 60.616 ppb6,325
City of BrentwoodBrentwood, CA4 of 200.570 ppb53,278
City of Hallandale BeachHallandale Beach, FL2 of 20.506 ppb40,000
City of Oakland ParkOakland Park, FL2 of 20.480 ppb27,984
City of Pembroke PinesPembroke Pines, FL2 of 20.480 ppb168,600
Warwick-potowomutWarwick, RI2 of 160.475 ppb2,357
Kent County Water Authority*West Warwick, RI2 of 160.475 ppb88,780
Centre of New England Hopkins Hill Rd.Rumford, RI2 of 160.475 ppb317
Centre of New England BoulevardRumford, RI2 of 160.475 ppb9,999
City of Wilton ManorsWilton Manors, FL2 of 20.460 ppb11,700
Southeast Morris County Municipal Utilities Authority*Cedar Knolls, NJ2 of 220.445 ppb62,053
MDWASA/REX UtilitiesMiami, FL6 of 100.402 ppb45,200
City of Hollywood*Hollywood, FL2 of 20.396 ppb147,566
Four Seasons Mobile Home ParkPeoria, IL3 of 120.358 ppb270
Deluxe Lake Estates Mobile Home ParkEast Peoria, IL3 of 120.358 ppb325
T-l Rural Water District*Glasford, IL3 of 120.358 ppb2,665
Hanna CityHanna City, IL3 of 120.358 ppb1,322
IL American - Peoria*Belleville, IL3 of 120.358 ppb121,478
DunlapDunlap, IL3 of 120.358 ppb1,386
Royal Oaks EstatesPeoria, IL3 of 120.358 ppb865
MarshallMarshall, MN1 of 20.355 ppb13,680
California Water Service (CWS) - Los Altos SuburbanSan Jose, CA8 of 260.353 ppb68,404
HempsteadHempstead, NY2 of 40.335 ppb56,000
City of PortervillePorterville, CA16 of 640.325 ppb55,107
Warwick Township Lititz SystemLititz, PA4 of 40.303 ppb8,561
Santa MonicaSanta Monica, CA2 of 40.290 ppb92,185
San Fernando Water DepartmentSan Fernando, CA10 of 120.288 ppb23,839
Broward County Water and Wastewater Services (BCWWS) 3AFt Lauderdale, FL2 of 20.285 ppb16,046
Tamarac (east), City ofTamarac, FL2 of 40.275 ppb2,582
Davie (hacienda Village)Davie, FL2 of 40.275 ppb1,000
City of Fort Lauderdale*Ft Lauderdale, FL2 of 40.275 ppb182,245
Sacramento Suburban Water District*Sacramento, CA3 of 1120.251 ppb171,200
City of Fort Collins*Fort Collins, CO3 of 40.238 ppb124,262
Glenwood Water DistrictGlenwood Landing, NY4 of 140.234 ppb1,000
Roslyn WD*Roslyn, NY4 of 140.234 ppb18,000
California American Water Company - Lincoln OaksSacramento, CA4 of 390.225 ppb46,606
First U D of Hawkins Company*Church Hill, TN2 of 80.214 ppb21,075
New Canton Utility DistrictChurch Hill, TN2 of 80.214 ppb515
City of South PasadenaSouth Pasadena, CA2 of 20.210 ppb25,899
AdrianJackson, MI3 of 40.208 ppb21,133
Wasilla Water SystemWasilla, AK2 of 60.203 ppb18,222

* 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.

UtilityLocationTestsAverage levelPeople served
City of Newman Water DepartmentNewman, CA4 of 71.98 ppb10,586
FridleyFridley, MN2 of 61.67 ppb27,853
City of Arlington*Arlington, TX2 of 71.26 ppb383,950
Franklin Square WDFranklin Square, NY4 of 61.19 ppb20,000
Scotts Valley Water DistrictScotts Valley, CA2 of 80.913 ppb10,509
City of Zephyrhills*Zephyrhills, FL4 of 140.843 ppb23,097
Perkasie Regional AuthoritySellersville, PA4 of 100.820 ppb15,000
Aqua Pa HatboroBryn Mawr, PA8 of 150.724 ppb12,901
City of BrentwoodBrentwood, CA4 of 200.570 ppb53,278
City of Hallandale BeachHallandale Beach, FL2 of 20.506 ppb40,000
City of Oakland ParkOakland Park, FL2 of 20.480 ppb27,984
City of Pembroke PinesPembroke Pines, FL2 of 20.480 ppb168,600
Kent County Water Authority*West Warwick, RI2 of 160.475 ppb88,780
City of Wilton ManorsWilton Manors, FL2 of 20.460 ppb11,700
Southeast Morris County Municipal Utilities Authority*Cedar Knolls, NJ2 of 220.445 ppb62,053
MDWASA/REX UtilitiesMiami, FL6 of 100.402 ppb45,200
City of Hollywood*Hollywood, FL2 of 20.396 ppb147,566
IL American - Peoria*Belleville, IL3 of 120.358 ppb121,478
MarshallMarshall, MN1 of 20.355 ppb13,680
California Water Service (CWS) - Los Altos SuburbanSan Jose, CA8 of 260.353 ppb68,404
HempsteadHempstead, NY2 of 40.335 ppb56,000
City of PortervillePorterville, CA16 of 640.325 ppb55,107
Santa MonicaSanta Monica, CA2 of 40.290 ppb92,185
San Fernando Water DepartmentSan Fernando, CA10 of 120.288 ppb23,839
Broward County Water and Wastewater Services (BCWWS) 3AFt Lauderdale, FL2 of 20.285 ppb16,046
City of Fort Lauderdale*Ft Lauderdale, FL2 of 40.275 ppb182,245
Sacramento Suburban Water District*Sacramento, CA3 of 1120.251 ppb171,200
City of Fort Collins*Fort Collins, CO3 of 40.238 ppb124,262
Roslyn WD*Roslyn, NY4 of 140.234 ppb18,000
California American Water Company - Lincoln OaksSacramento, CA4 of 390.225 ppb46,606
First U D of Hawkins Company*Church Hill, TN2 of 80.214 ppb21,075
City of South PasadenaSouth Pasadena, CA2 of 20.210 ppb25,899
AdrianJackson, MI3 of 40.208 ppb21,133
Wasilla Water SystemWasilla, AK2 of 60.203 ppb18,222
City of SunnyvaleSunnyvale, CA3 of 190.203 ppb147,055
City of TempeTempe, AZ10 of 240.202 ppb165,000
VintonVinton, VA1 of 30.202 ppb12,800
San Jose State UniversitySan Jose, CA4 of 40.198 ppb30,000
Granger - Hunter Improvement DistrictWest Valley City, UT2 of 160.194 ppb121,083
California Water Service (CWS) - VisaliaSan Jose, CA6 of 860.186 ppb135,923
Leyden Twsp Water DistrictFranklin Park, IL2 of 40.185 ppb16,000
MaywoodMaywood, IL2 of 40.185 ppb24,090
BellwoodBellwood, IL2 of 40.185 ppb19,107
North LakeNorthlake, IL2 of 40.185 ppb12,323
Melrose Park*Melrose Park, IL2 of 40.185 ppb25,514
Great Oaks Water Company Inc.*San Jose, CA9 of 260.178 ppb99,199
Ironton PWS*Ironton, OH2 of 40.178 ppb11,129
Broward County Water and Wastewater Services (BCWWS) 3B/CMiramar, FL2 of 20.165 ppb32,650
Bourne Water District*Pocasset, MA4 of 120.162 ppb22,500
Broward County Water and Wastewater Services (BCWWS) - 2A*Pompano Beach, FL2 of 20.160 ppb54,622

* 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.