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EWG's Tap Water Database — 2021 UPDATE

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Trichlorofluoromethane

City of Rosenberg

Trichlorofluoromethane (Freon 11) 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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND50ND
2016ND40ND
2017ND50ND
2018ND50ND
2019ND30ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1,300 ppb

The EWG Health Guideline of 1,300 ppb for trichlorofluoromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-21AC39520ND
2015-03-25AC86068ND
2015-03-25AC86064ND
2015-03-25AC86066ND
2015-03-25AC86058ND
2015-05-05AC90568ND
2016-01-26AD20142ND
2016-01-26AD20114ND
2016-01-26AD20110ND
2016-01-26AD20136ND
2017-03-14AD74917ND
2017-03-14AD74885ND
2017-03-14AD74943ND
2017-05-31AD86151ND
2017-05-31AD86153ND
2018-03-05AE16646ND
2018-03-05AE16648ND
2018-03-05AE16654ND
2018-03-05AE16660ND
2018-05-21AE27018ND
2019-04-02AE60873ND
2019-04-02AE60883ND
2019-04-02AE60877ND