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EWG's Tap Water Database — 2021 UPDATE

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Chlorodifluoromethane

City of Mountain View

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0669 ppb132ND - 0.570 ppb
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
2014-02-192978649ND
2014-02-192978613ND
2014-02-1929786350.300 ppb
2014-02-192978603ND
2014-02-192978594ND
2014-05-083025965ND
2014-05-083025956ND
2014-08-213091442ND
2014-08-213091412ND
2014-08-2130914270.570 ppb
2014-08-213091403ND
2014-11-193143624ND
2014-11-193143582ND