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EWG's Tap Water Database — 2019 UPDATE

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Chlorodifluoromethane

Berwyn

NOTE: Berwyn purchases water from City of Chicago which is required to test for chlorodifluoromethane. Sample information shown below was taken by City of Chicago.

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND40ND
2014ND60ND
2015ND20ND
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

All test results

NOTE: Berwyn purchases water from City of Chicago which is required to test for chlorodifluoromethane. Sample information shown below was taken by City of Chicago.

Date Lab ID Result
2014-04-283015710ND
2014-04-283015743ND
2014-08-133081747ND
2014-08-133081727ND
2014-10-073118975ND
2014-10-073118990ND
2015-01-133169383ND
2015-01-133169403ND