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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

Alameda County Water District

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.

MORE ABOUT THIS CONTAMINANT

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0180 ppb152ND - 0.150 ppb
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
2014-03-24201403250220AMND
2014-03-24201403250270AM0.150 ppb
2014-03-24201403250222AMND
2014-03-24201403250273AMND
2014-06-02201406030458AMND
2014-06-02201406030454AMND
2014-06-02201406030452AMND
2014-06-02201406030456AMND
2014-09-08201409090360AMND
2014-09-08201409090358AMND
2014-09-08201409090356AMND
2014-09-08201409090384AM0.120 ppb
2014-12-08201412090321AMND
2014-12-08201412090319AMND
2014-12-08201412090317AMND