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EWG's Tap Water Database — 2019 UPDATE

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Dichlorodifluoromethane

Boston Harbor

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.

 

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

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