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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

Lake Zurich

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
2014ND50ND
2015ND50ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-07-1526387801ND
2014-07-1526387501ND
2014-07-1526387601ND
2014-07-1626387401ND
2014-07-1626387701ND
2015-01-1228030801ND
2015-01-1228030601ND
2015-01-1328030401ND
2015-01-1328030501ND
2015-02-1028030701ND