Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Dichlorodifluoromethane

Pasadena

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.

MORE ABOUT THIS CONTAMINANT

 

77

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND50ND
2015ND250ND
2016ND20ND
2017ND220ND
2018ND230ND
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-129590-047-1000ND
2014-08-129590-045-1050ND
2014-08-129590-028-0845ND
2014-08-129590-023-0840ND
2014-11-219590-018-0900ND
2015-04-219590-005-0856ND
2015-04-219590-010-0900ND
2015-05-139590-045-1005ND
2015-05-139590-047-0940ND
2015-05-139590-028-0840ND
2015-05-139590-023-0915ND
2015-06-029590-028-0800ND
2015-06-029590-031-0800ND
2015-06-039590-018-0800ND
2015-06-039590-018-1015ND
2015-06-099590-047-0800ND
2015-06-099590-045-0800ND
2015-06-099590-023-0800ND
2015-06-099590-050-0800ND
2015-06-099590-025-0800ND
2015-06-099590-018-0800ND
2015-06-099590-051-0800ND
2015-06-099590-001-0800ND
2015-08-119590-045-0945ND
2015-08-119590-023-1230ND
2015-08-119590-028-1114ND
2015-08-119590-047-1120ND
2015-08-119590-018-0906ND
2015-08-119590-006-1023ND
2015-08-119590-005-1040ND
2016-11-019590-019-0813ND
2016-11-019590-047-1030ND
2017-06-309588-018-0820ND
2017-08-089588-045-0920ND
2017-08-089588-047-1200ND
2017-08-089588-028-1120ND
2017-08-089588-001-1145ND
2017-08-089588-005-0935ND
2017-08-089588-006-1030ND
2017-08-089588-010-1305ND
2017-08-089588-018-0945ND
2017-08-089588-019-0910ND
2017-08-089588-023-1100ND
2017-10-109588-028-0925ND
2017-10-109588-001-1050ND
2017-10-109588-051-0902ND
2017-10-109588-050-0942ND
2017-10-109588-047-0935ND
2017-10-109588-018-0905ND
2017-10-109588-045-0905ND
2017-10-109588-023-1000ND
2017-10-109588-030-0832ND
2017-10-109588-031-0850ND
2017-10-109588-025-1009ND
2018-03-209588-045-1130ND
2018-03-209588-047-1055ND
2018-03-219588-028-1155ND
2018-03-219588-031-1250ND
2018-03-219588-030-1230ND
2018-03-219588-018-0920ND
2018-05-229588-023-1135ND
2018-05-229588-005-1240ND
2018-05-229588-028-0855ND
2018-05-229588-047-0910ND
2018-05-229588-018-0950ND
2018-05-229588-045-1025ND
2018-06-199588-030-0821ND
2018-06-199588-031-0828ND
2018-06-219588-023-0900ND
2018-06-259588-019-1225ND
2018-06-269588-030-0836ND
2018-06-269588-050-1010ND
2018-06-269588-028-0759ND
2018-06-269588-051-0930ND
2018-06-269588-031-0814ND
2018-06-269588-001-0840ND
2018-06-269588-025-1040ND