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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

Harris County WCID 36

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND90ND
2014ND10ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2013-04-013D02018-01ND
2013-05-063E07011-01ND
2013-05-063E07011-07ND
2013-05-063E07011-04ND
2013-07-083G09010-01ND
2013-10-073J08018-01AND
2013-11-053K06014-04ND
2013-11-053K06014-01ND
2013-11-053K06014-07ND
2014-01-074A08012-01ND