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EWG's Tap Water Database — 2021 UPDATE

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Dichlorodifluoromethane

Metropolitan Water District of So. Cal.

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.

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52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND50ND
2015ND150ND
2016ND50ND
2017ND50ND
2018ND150ND
2019ND70ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-10-074412-026-1000ND
2014-10-074412-020-1120ND
2014-10-074412-013-1020ND
2014-10-074412-005-0840ND
2014-10-074412-003-0819ND
2015-01-064412-003-0810ND
2015-01-064412-026-0820ND
2015-01-064412-005-0845ND
2015-01-064412-020-1055ND
2015-01-064412-013-1015ND
2015-04-089588-003-1000ND
2015-04-089588-026-1047ND
2015-04-089588-020-1100ND
2015-04-089588-013-1020ND
2015-04-089588-005-0830ND
2015-11-039588-003-1030ND
2015-11-039588-013-1015ND
2015-11-039588-005-0925ND
2015-11-039588-026-0837ND
2015-11-059588-020-1020ND
2016-04-044412-003-1015ND
2016-04-044412-020-1030ND
2016-04-044412-005-0730ND
2016-04-044412-013-1020ND
2016-04-044412-026-0920ND
2017-07-314412-013-0900ND
2017-07-314412-005-0905ND
2017-07-314412-003-1000ND
2017-08-014412-026-1110ND
2017-08-024412-020-0835ND
2018-04-029588-005-1223ND
2018-04-029588-020-1124ND
2018-04-029588-003-1345ND
2018-04-039588-026-1528ND
2018-04-099588-013-0805ND
2018-10-019588-020-1015ND
2018-10-019588-003-1140ND
2018-10-024412-003-1046ND
2018-10-029588-013-1010ND
2018-10-024412-013-1010ND
2018-10-024412-020-1020ND
2018-10-024412-026-0950ND
2018-10-029588-026-0950ND
2018-10-029588-005-1115ND
2018-10-024412-005-0742ND
2019-01-024412-003-0910ND
2019-01-024412-020-1040ND
2019-01-024412-026-0737ND
2019-01-024412-005-0715ND
2019-01-144412-013-0825ND
2019-10-219588-005-0745ND
2019-10-229588-020-1315ND