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EWG's Tap Water Database — 2021 UPDATE

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Trichlorofluoromethane

Decker Hills

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND40ND
2016ND40ND
2017ND40ND
2018ND40ND
2019ND40ND

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
2014-04-15AC50585ND
2015-09-23AD08265ND
2015-09-23AD08263ND
2015-09-23AD08267ND
2015-09-23AD08259ND
2016-06-01AD38987ND
2016-06-01AD38989ND
2016-06-01AD38973ND
2016-06-01AD38981ND
2017-08-25AD94469ND
2017-08-25AD94483ND
2017-08-25AD94481ND
2017-08-25AD94475ND
2018-07-09AE32630ND
2018-07-09AE32626ND
2018-07-09AE32644ND
2018-07-09AE32636ND
2019-03-19AE59057ND
2019-03-19AE59039ND
2019-03-19AE59055ND
2019-03-19AE59037ND