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EWG's Tap Water Database — 2021 UPDATE

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Dichlorodifluoromethane

Oakland, City of

Dichlorodifluoromethane (Freon-12) 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
2014ND10ND
2015ND20ND
2016ND20ND
2017ND30ND
2018ND10ND
2019ND10ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-21279090ND
2015-08-24375420ND
2015-08-24375421ND
2016-08-15ND
2016-08-15ND
2017-01-23ND
2017-08-14ND
2017-08-14ND
2018-08-20568476ND
2019-08-19628393ND