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EWG's Tap Water Database — 2019 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.

2012-2017:

FOUND

37

states detected

449

utilities detected

29 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
California8111,600,244
Florida524,939,863
New York232,244,059
Colorado381,691,416
Arizona181,642,433
Washington9581,459
Illinois24547,787
New Jersey10531,092
Virginia7525,020
Texas18489,380
Pennsylvania29436,368
Delaware3339,700
Ohio8338,222
Kansas21320,181
Indiana4267,632
Massachusetts14251,704
Michigan7229,125
Iowa6218,010
Hawaii3213,932
Utah5206,333
Minnesota6203,743
Missouri3150,938
Wisconsin7143,200
Nebraska9113,616
Tennessee6110,915
Rhode Island4101,453
Georgia893,301
Oklahoma489,676
North Carolina687,256
South Carolina675,174
South Dakota273,308
Idaho273,300
New Mexico137,877
Oregon136,295
Alaska118,222
Nevada118,000
Vermont24,656
MORE
LESS

Utilities with the highest amounts of chlorodifluoromethane, 2012-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
City of Newman Water DepartmentNewman, CA4 of 71.98 ppb10,586
FridleyFridley, MN2 of 61.67 ppb27,208
City of Arlington*Arlington, TX2 of 71.26 ppb379,370
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 ppb21,823
Pcud-florida Estates (east Pasco)New Port Richey, FL4 of 140.843 ppb575
Perkasie Regional AuthorityPerkasie, PA4 of 100.820 ppb11,100
Aqua Pa HatboroBryn Mawr, PA8 of 150.724 ppb12,901
Rowley Water DepartmentRowley, MA2 of 60.616 ppb6,256
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 ppb160,000
Centre of New England BoulevardProvidence, RI2 of 160.475 ppb9,999
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.Providence, RI2 of 160.475 ppb317
City of Wilton ManorsWilton Manors, FL2 of 20.460 ppb11,700
Southeast Morris County Municipal Utilities Authority*Cedar Knolls, NJ2 of 220.445 ppb62,050
MDWASA/REX UtilitiesMiami, FL6 of 100.402 ppb45,200
City of Hollywood*Hollywood, FL2 of 20.396 ppb142,705
Four Seasons Mobile Home ParkPeoria, IL3 of 120.358 ppb478
IL American - Peoria*Creve Coeur, IL3 of 120.358 ppb136,000
DunlapDunlap, IL3 of 120.358 ppb1,268
Kingspark Mobile EstatesPeoria, IL3 of 120.358 ppb1,415
Deluxe Lake Estates Mobile Home ParkBellevue, IL3 of 120.358 ppb325
T-l Rural Water District*Glasford, IL3 of 120.358 ppb2,425
Hanna CityHanna City, IL3 of 120.358 ppb1,322
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
City of Fort Lauderdale*Ft Lauderdale, FL2 of 40.275 ppb182,145
Davie (hacienda Village)Davie, FL2 of 40.275 ppb1,000
Tamarac (east), City ofTamarac, FL2 of 40.275 ppb1,900
Sacramento Suburban Water District*Sacramento, CA3 of 1120.251 ppb171,200
City of Fort Collins*Fort Collins, CO3 of 40.238 ppb129,100
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 ppb19,197
New Canton Utility DistrictChurch Hill, TN2 of 80.214 ppb513
City of South PasadenaSouth Pasadena, CA2 of 20.210 ppb25,899
AdrianAdrian, 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 ppb27,208
City of Arlington*Arlington, TX2 of 71.26 ppb379,370
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 ppb21,823
Perkasie Regional AuthorityPerkasie, PA4 of 100.820 ppb11,100
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 ppb160,000
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 ppb62,050
MDWASA/REX UtilitiesMiami, FL6 of 100.402 ppb45,200
City of Hollywood*Hollywood, FL2 of 20.396 ppb142,705
IL American - Peoria*Creve Coeur, IL3 of 120.358 ppb136,000
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 ppb182,145
Sacramento Suburban Water District*Sacramento, CA3 of 1120.251 ppb171,200
City of Fort Collins*Fort Collins, CO3 of 40.238 ppb129,100
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 ppb19,197
City of South PasadenaSouth Pasadena, CA2 of 20.210 ppb25,899
AdrianAdrian, 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 DistrictDraper, UT2 of 160.194 ppb121,083
California Water Service (CWS) - VisaliaSan Jose, CA6 of 860.186 ppb135,923
BellwoodBellwood, IL2 of 40.185 ppb20,535
Melrose Park*Melrose Park, IL2 of 40.185 ppb22,700
North LakeNorthlake, IL2 of 40.185 ppb11,878
Leyden Twsp Water DistrictFranklin Park, IL2 of 40.185 ppb16,000
MaywoodMaywood, IL2 of 40.185 ppb28,100
Great Oaks Water Company Inc.San Jose, CA9 of 260.178 ppb99,199
Ironton PWSIronton, OH2 of 40.178 ppb11,129
Broward County Water and Wastewater Services (BCWWS) 3B/CMiramar, FL2 of 20.165 ppb32,649
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.