Chlorodifluoromethane

ISU

NOTE: ISU purchases water from Ames Water Treatment Plant which is required to test for chlorodifluoromethane. Sample information shown below was taken by Ames Water Treatment Plant.

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.

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Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	N/A	0	N/A
2015	ND	2	ND
2016	N/A	0	N/A
2017	N/A	0	N/A
2018	N/A	0	N/A
2019	N/A	0	N/A

ppb = parts per billion

All test results

NOTE: ISU purchases water from Ames Water Treatment Plant which is required to test for chlorodifluoromethane. Sample information shown below was taken by Ames Water Treatment Plant.

Date	Lab ID	Result
2013-01-22	79105	ND
2013-07-22	111668	ND