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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

Maryland American Water Company

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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND40ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-11-1127547501ND
2014-11-1127547401ND
2015-02-1228168801ND
2015-05-1128899101ND
2015-05-1128899201ND
2015-08-1129934201ND