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	Podcast:		Local Features by WXPR
	Episode:		Rhinelander PFAS Solution May Come From Teenagers Designing Water Filters
	Category:		Government & Organizations
	Duration:		00:05:00
	Publish Date:		2019-12-12 08:59:51
	Description:		On Tuesday, high school junior Mariah Freeman watched water drip through a filter she designed and constructed. “We’re going to take the filter we’ve made, and we’re going to pour that water through it, and then retest the water in the new bottle,” Freeman explained. Freeman and her classmates in Cheryl Esslinger’s Earth and Environmental Systems class at Rhinelander High School were simply trying to filter vinegar out of the water and balance its acidity. The students wanted to know whether their inventions will filter out anything at all. Vinegar is the first step. The ultimate goal is devising a filter for per- and polyfluoroalkyl substances (PFAS). “In between those two cotton rounds, we have activated charcoal. The activated charcoal is supposed to help filter out the PFAS in the water,” Freeman said, pointing out the parts of the filter. This summer, elevated levels of PFAS, a water contaminant with health risks, was found in a Rhinelander municipal water well. High levels of
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