Know Your Environment. Protect Your Health.

Trichlorofluoromethane

Dorchester, Village of

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND30ND
2021ND10ND
2022ND20ND
2023ND50ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-07-16560158ND
2019-07-15621241ND
2020-05-26667014ND
2020-09-14684285ND
2020-09-28701100ND
2021-07-19745978ND
2022-07-05809302ND
2022-07-27818275ND
2023-01-17842469ND
2023-04-24855387ND
2023-05-15855924ND
2023-07-17873260ND
2023-10-16891653ND