Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Trichlorofluoromethane

Boston Harbor

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015ND120ND
2016ND10ND
2017ND10ND

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
2015-04-0115863ND
2015-04-0115863ND
2015-04-0115863ND
2015-05-0416373ND
2015-05-0416372ND
2015-09-1718579ND
2015-09-1718578ND
2015-10-2919346ND
2015-10-2919346ND
2015-10-2919347ND
2015-10-2919347ND
2015-12-1120103ND
2016-03-08ND
2017-03-22ND