Know Your Environment. Protect Your Health.

CONTAMINANT

Chlorodifluoromethane

STATES DETECTED

1

serves

565,000

utilities detected

24

Overview

understand filter technology

Chlorodifluoromethane around the Country

UTILITIES WITH CONTAMINATION
State Utilities People Served
New York24564,735

Utilities with the highest amounts of chlorodifluoromethane, 2021-2023

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
SchaghticokeSchaghticoke, NY1 of 14.18 ppb949
NassauNassau, NY1 of 13.47 ppb1,250
Hudson CityHudson, NY4 of 50.962 ppb7,500
Vanderheyden Hall Inc.Wynantskill, NY4 of 40.928 ppb280
Rensselaer City Public Water SupplyRensselaer, NY4 of 40.858 ppb9,300
Schaghticoke Consolidated Water District #1Melrose, NY6 of 60.848 ppb1,975
East Greenbush General WDEast Greenbush, NY24 of 240.844 ppb10,200
Bon Acre Mobile Home ParkAverill Park, NY1 of 10.840 ppb180
Poestenkill Water District #1*Poestenkill, NY7 of 80.705 ppb752
Brunswick Consolidated Water District*Troy, NY7 of 80.705 ppb7,802
Garden CityGarden City, NY79 of 3820.676 ppb46,000
Franklin Square WDFranklin Square, NY14 of 1940.629 ppb20,000
Schaghticoke Water District #3Melrose, NY4 of 50.620 ppb1,100
Creekside ParkNew York, NY1 of 10.500 ppb94
Glen Cove CityGlen Cove, NY145 of 6140.497 ppb28,000
Brunswick Water District #11Troy, NY1 of 20.470 ppb100
Brunswick Water District #16Troy, NY1 of 20.455 ppb200
Hoosick FallsHoosick Falls, NY4 of 120.305 ppb4,925
Jericho Water DistrictSyosset, NY44 of 3640.191 ppb58,000
Williston Park*Williston Park, NY8 of 450.137 ppb10,072
East WillistonEast Williston, NY8 of 450.137 ppb2,556
Albertson WDRoslyn Heights, NY8 of 1780.0674 ppb13,500
Liberty New York Water - LynbrookMerrick, NY32 of 4540.0495 ppb220,000
Water Authority of Western NassauNew Hyde Park, NY5 of 3250.0350 ppb120,000

* 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.

UtilityLocationTestsAverage levelPeople served
East Greenbush General WDEast Greenbush, NY24 of 240.844 ppb10,200
Garden CityGarden City, NY79 of 3820.676 ppb46,000
Franklin Square WDFranklin Square, NY14 of 1940.629 ppb20,000
Glen Cove CityGlen Cove, NY145 of 6140.497 ppb28,000
Jericho Water DistrictSyosset, NY44 of 3640.191 ppb58,000
Williston Park*Williston Park, NY8 of 450.137 ppb10,072
Albertson WDRoslyn Heights, NY8 of 1780.0674 ppb13,500
Liberty New York Water - LynbrookMerrick, NY32 of 4540.0495 ppb220,000
Water Authority of Western NassauNew Hyde Park, NY5 of 3250.0350 ppb120,000

* 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.

Know the Standards

Understand EWG’s guidelines on contaminants in your water.

view ewg’s standards

Take Action

Interested in supporting other causes? Learn more about our ongoing campaigns and how you can make a difference.

LEARN MORE

Need help finding a filter?

Discover top-rated filters that protect your family from harmful contaminants.

GET THE GUIDE

We’re in this together

Donate today and join the fight to protect our environmental health.

DONATE TODAY

Protect your water

Sign our petition to protect PFAS drinking water standards

TAKE ACTION