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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

City of Patterson

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND140ND
2014N/A00N/A
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
2013-04-24A3D0757-07AND
2013-04-24A3D0757-11AND
2013-04-24A3D0757-05AND
2013-04-24A3D0757-01AND
2013-04-24A3D0757-13AND
2013-04-24A3D0757-09AND
2013-04-24A3D0757-03AND
2013-10-23A3I1246-14AND
2013-10-23A3I1246-12AND
2013-10-23A3I1246-04AND
2013-10-23A3I1246-01AND
2013-10-23A3I1246-10AND
2013-10-23A3I1246-06AND
2013-10-23A3I1246-08AND