Know Your Environment. Protect Your Health.

CONTAMINANT

Trichlorofluoromethane

STATES DETECTED

7

serves

516,000

utilities detected

25

states detected

0

serves

0

utilities detected

0

Overview

Trichlorofluoromethane (Freon 11) 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.

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1,300 ppb

The EWG Health Guideline of 1,300 ppb for trichlorofluoromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

ppb = parts per billion

National Standard Exists

Health Concerns:

  • Harm to the liver

  • Change to the central nervous system

  • Harm to the heart and blood vessels

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Trichlorofluoromethane around the Country

UTILITIES WITH CONTAMINATION
State Utilities People Served
Wisconsin8309,682
New York9168,274
New Jersey116,466
Massachusetts116,402
California33,958
Georgia1900
Washington2266

Utilities with the highest amounts of trichlorofluoromethane, 2021-2023

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Yuima Municipal Water District Ida*Pauma Valley, CA11 of 1840.7 ppb769
Yak Co. - CrewportYakima, WA6 of 64.17 ppb192
Marshall Community Water AssociationMarshall, WA1 of 11.02 ppb74
Garden CityGarden City, NY36 of 3820.673 ppb46,000
Valenzuela Water SystemHollister, CA1 of 10.660 ppb55
Pine Tree Mobile Home ParkStamford, NY1 of 10.500 ppb44
WhiteWhite, GA2 of 70.400 ppb900
Dix Hills Water DistrictHuntington, NY1 of 10.380 ppb34,522
South Huntington Water DepartmentCenterport, NY2 of 20.309 ppb81,760
Perry Village*Perry, NY1 of 20.250 ppb4,348
Silver Lake Institute - Castile Water District #1Castile, NY1 of 20.250 ppb440
Perry Center Water DistrictPerry, NY1 of 20.250 ppb150
Gardeau Water DistrictSilver Springs, NY1 of 20.250 ppb60
La Crosse WaterworksLa Crosse, WI1 of 10.150 ppb53,000
Park Ridge Water DepartmentPark Ridge, NJ2 of 20.148 ppb16,466
Madison Water Utility*Madison, WI21 of 700.128 ppb235,000
Maple Bluff WaterworksMadison, WI21 of 700.128 ppb1,342
Shorewood Hills WaterworksMadison, WI21 of 700.128 ppb1,670
Rimrock Road NeighborhoodFitchburg, WI21 of 700.128 ppb135
Danville Drive Service AreaFitchburg, WI21 of 700.128 ppb150
Angelica Village Public WaterAngelica, NY1 of 40.125 ppb950
Little Chute WaterworksLittle Chute, WI2 of 20.115 ppb11,040
Amarillo Mutual Water CompanyRosemead, CA1 of 50.106 ppb3,134
Concord Water DepartmentConcord, MA3 of 190.0989 ppb16,402
Altoona WaterworksAltoona, WI1 of 30.0300 ppb7,345

* 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 Trichlorofluoromethane, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Garden CityGarden City, NY36 of 3820.673 ppb46,000
Dix Hills Water DistrictHuntington, NY1 of 10.380 ppb34,522
South Huntington Water DepartmentCenterport, NY2 of 20.309 ppb81,760
La Crosse WaterworksLa Crosse, WI1 of 10.150 ppb53,000
Park Ridge Water DepartmentPark Ridge, NJ2 of 20.148 ppb16,466
Madison Water Utility*Madison, WI21 of 700.128 ppb235,000
Little Chute WaterworksLittle Chute, WI2 of 20.115 ppb11,040
Concord Water DepartmentConcord, MA3 of 190.0989 ppb16,402

* 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 Trichlorofluoromethane, but it likely has the contaminant in its water supply.

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