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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

Mallory Valley Utility Distric

NOTE: Mallory Valley Utility Distric purchases water from Harpeth Valley Utility District which is required to test for chlorodifluoromethane. Sample information shown below was taken by Harpeth Valley Utility District.

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.

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND40ND
2014ND30ND
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

NOTE: Mallory Valley Utility Distric purchases water from Harpeth Valley Utility District which is required to test for chlorodifluoromethane. Sample information shown below was taken by Harpeth Valley Utility District.

Date Result
2014-05-15ND
2014-08-14ND
2014-11-17ND
2015-02-11ND