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EWG's Tap Water Database — 2021 UPDATE

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Dichlorodifluoromethane

Alton Water Works

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND30ND
2016ND20ND
2017ND10ND
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-24129795.01ND
2015-03-24141475.01ND
2015-04-02141786.01ND
2015-04-02141787.01ND
2016-03-17A153943.01ND
2016-06-20157373.01ND
2017-03-02166100.01ND