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EWG's Tap Water Database — 2021 UPDATE

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Trichlorofluoromethane

San Gabriel County WD

Trichlorofluoromethane (Freon 11) 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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1,300 ppb

The EWG Health Guideline of 1,300 ppb for trichlorofluoromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

ppb = parts per billion

All test results

Date Lab ID Result
2014-04-089588-007-0940ND
2014-06-173761-020-1020ND
2014-07-149588-011-0945ND
2014-07-149588-010-0915ND
2014-07-149588-009-0900ND
2014-07-159588-001-1000ND
2014-12-059588-020-0910ND
2015-03-179588-020-1050ND
2015-06-119588-007-0905ND
2015-07-169588-010-1000ND
2015-07-169588-001-0940ND
2015-07-169588-011-1020ND
2016-04-139588-007-0940ND
2016-07-189588-010-0935ND
2016-07-189588-011-0950ND
2016-07-189588-009-0925ND
2016-09-159588-020-0910ND
2017-04-139588-007-0925ND
2017-07-179588-010-0925ND
2017-07-179588-011-0945ND
2017-07-179588-020-1025ND
2017-07-179588-009-0905ND
2018-04-069588-007-0930ND
2018-07-189588-010-1045ND
2018-07-189588-020-1010ND
2018-07-189588-009-1100ND
2018-07-189588-011-1030ND
2019-04-109588-007-1015ND
2019-07-129588-020-1015ND
2019-07-129588-011-0950ND
2019-07-129588-010-1035ND
2019-07-129588-009-1045ND