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EWG's Tap Water Database — 2021 UPDATE

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Trichlorofluoromethane

Dallas Water Utility

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND30ND
2016ND30ND
2017ND30ND
2018ND30ND
2019ND30ND

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
2014-07-03Q1425969002ND
2014-09-10Q1442990003ND
2014-09-10Q1442990002ND
2015-07-08Q1526377021ND
2015-07-08Q1526377019ND
2015-07-08Q1526377022ND
2016-07-07Q1627338001ND
2016-09-14Q1637473001ND
2016-09-14Q1637473004ND
2017-07-10Q1727819009ND
2017-07-10Q1727819018ND
2017-08-23Q1737870004ND
2018-07-17Q1828182010ND
2018-08-07Q1831263004ND
2018-08-07Q1831263001ND
2019-07-08Q1942567001ND
2019-07-16Q1945074005ND
2019-07-16Q1945074007ND