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EWG's Tap Water Database — 2019 UPDATE

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Chlorodifluoromethane

City of San Diego

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.

 

12

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
2013ND60ND
20140.0418 ppb62ND - 0.160 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2013-08-191308683-001FND
2013-08-201308735-001FND
2013-08-211308767-001FND
2013-11-121311404-001FND
2013-11-121311402-001FND
2013-11-131311448-001FND
2014-02-101402421-001F0.160 ppb
2014-02-101402418-001FND
2014-02-111402513-001FND
2014-05-121405468-001F0.0910 ppb
2014-05-121405511-001FND
2014-05-131405607-001FND