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EWG's Tap Water Database — 2019 UPDATE

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Trichlorofluoromethane

Holden Water Division, DPW

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.

 

49

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
2013ND80ND
2014ND80ND
2015ND80ND
2016ND90ND
2017ND80ND

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 Result
2012-01-05ND
2012-05-08ND
2012-05-08ND
2012-05-08ND
2012-05-08ND
2012-06-11ND
2012-08-22ND
2012-11-20ND
2013-02-20ND
2013-05-16ND
2013-05-16ND
2013-05-16ND
2013-05-16ND
2013-05-16ND
2013-08-21ND
2013-11-18ND
2014-02-18ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-08-20ND
2014-11-19ND
2015-02-18ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-05-19ND
2015-08-18ND
2015-11-17ND
2016-02-02ND
2016-02-16ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-09-06ND
2016-11-15ND
2017-02-21ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-05-16ND
2017-08-15ND
2017-11-21ND