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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

California Water Service Company - East Los Angeles

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.

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24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0342 ppb195ND - 0.180 ppb
20150.0190 ppb51ND - 0.0950 ppb
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-11201402110511AMND
2014-02-11201402110487AMND
2014-02-11201402110497AMND
2014-02-18201402180284AMND
2014-02-18201402190140AMND
2014-02-18201402180318AM0.110 ppb
2014-03-10201403100289AM0.180 ppb
2014-05-05201405050256AMND
2014-05-12201405120239AMND
2014-08-04201408040383AM0.1000 ppb
2014-08-04201408040372AMND
2014-08-04201408040411AMND
2014-08-04201408040420AMND
2014-08-04201408040363AM0.110 ppb
2014-08-06201408060802AM0.150 ppb
2014-08-06201408060789AMND
2014-08-06201408060811AMND
2014-11-03201411030301AMND
2014-11-03201411030330AMND
2015-02-09201502090301AMND
2015-02-09201502090128AM0.0950 ppb
2015-02-10201502100663AMND
2015-08-17201508170415AMND
2015-08-17201508170244AMND