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EWG's Tap Water Database — 2019 UPDATE

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Chlorodifluoromethane

San Gabriel County WD

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
2012N/A00N/A
2013N/A00N/A
20140.0790 ppb104ND - 0.250 ppb
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-244C24025-09A0.250 ppb
2014-03-244C24025-05A0.150 ppb
2014-03-244C24025-07AND
2014-03-244C24025-01AND
2014-03-244C24025-03AND
2014-09-254I25045-07AND
2014-09-254I25045-01AND
2014-09-254I25045-09A0.230 ppb
2014-09-254I25045-03AND
2014-10-084J08065-01A0.160 ppb