Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dichlorodifluoromethane

San Juan Ranchos

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015N/A00N/A
2016N/A00N/A
2017ND50ND
2018ND30ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-0409477ND
2017-01-30ND
2017-06-07ND
2017-06-22ND
2017-09-14ND
2017-12-14ND
2018-03-13ND
2018-09-13ND
2018-10-04ND