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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

Bethesda WSC

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.

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36

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND360ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2013-02-181302519-009DND
2013-02-181302519-003DND
2013-02-181302519-007DND
2013-02-181302519-005DND
2013-02-181302519-021DND
2013-02-181302519-019DND
2013-02-181302519-015DND
2013-02-181302519-013DND
2013-02-181302519-023DND
2013-02-181302519-011DND
2013-02-181302519-001DND
2013-02-181302519-017DND
2013-02-181302519-025DND
2013-02-281302519-075DND
2013-02-281302519-077DND
2013-02-281302519-073DND
2013-02-281302519-079DND
2013-05-22Q1301418001ND
2013-08-12Q1305399023ND
2013-08-12Q1305399029ND
2013-08-12Q1305399027ND
2013-08-12Q1305399007ND
2013-08-12Q1305399033ND
2013-08-13Q1305399035ND
2013-08-13Q1305399009ND
2013-08-13Q1305399021ND
2013-08-13Q1305399017ND
2013-08-13Q1305399025ND
2013-08-13Q1305399001ND
2013-08-13Q1305399005ND
2013-08-13Q1305399011ND
2013-08-13Q1305399013ND
2013-08-13Q1305399015ND
2013-10-14Q1308872001ND
2013-10-14Q1308872003ND
2013-11-14Q1313379001ND