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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

MDWASA/REX Utilities

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.312 ppb53ND - 1.000 ppb
20150.492 ppb53ND - 1.30 ppb
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Result
2014-12-101.000 ppb
2014-12-100.380 ppb
2014-12-100.180 ppb
2014-12-10ND
2014-12-10ND
2015-06-091.000 ppb
2015-06-09ND
2015-06-090.160 ppb
2015-06-09ND
2015-06-091.30 ppb