Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Chlorodifluoromethane

St. Louis City

Chlorodifluoromethane (Freon 22) 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.

 

8

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
2013ND80ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2013-01-223580787001AMND
2013-01-223580790001AMND
2013-04-293591472001AMND
2013-04-293591472003AMND
2013-07-1535100737003AMND
2013-07-1535100737001AMND
2013-10-1635112733003AMND
2013-10-1635112733001AMND