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EWG's Tap Water Database — 2019 UPDATE

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Chlorodifluoromethane

Golden State Water Company (GSWC) - San Dimas

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.

 

16

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
2014N/A00N/A
20150.0556 ppb163ND - 0.430 ppb
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2015-01-215A21031-11AND
2015-01-215A21031-09AND
2015-01-215A21031-05AND
2015-01-215A21031-01A0.430 ppb
2015-01-215A21031-07AND
2015-01-215A21031-03AND
2015-04-175D17033-03AND
2015-04-175D17033-01AND
2015-07-215G21057-11A0.0890 ppb
2015-07-215G21057-09AND
2015-07-215G21057-05AND
2015-07-215G21057-03AND
2015-07-215G21057-01A0.370 ppb
2015-07-215G21057-07AND
2015-10-205J21034-03AND
2015-10-205J21034-01AND