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EWG's Tap Water Database — 2021 UPDATE

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Dichlorodifluoromethane

Birch Hill Water System

Dichlorodifluoromethane (Freon-12) 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.

 

2

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.10 ppb111.10 ppb
2015N/A00N/A
2016N/A00N/A
20170.900 ppb110.900 ppb
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-191402-03117-0011.10 ppb
2017-02-221702-03846-0010.900 ppb