What is the best way to filter PFAS?

WAUSAU, Wis. (WSAW) — PFAS is considered an “eternal chemical,” but there are ways to limit it. Too long exposure to PFAS, with too high levels, can lead to higher cholesterol levels, cancer and infertility in women.

“Studies have shown that when people take steps to reduce their exposure, the levels in their bodies go down,” said Dr Sarah Yang, a groundwater toxicologist with the Department of Health Services.

Kevin Masarik, groundwater outreach specialist at UW-Stevens Point, said there are several filters you can get to help you. Some filters are more efficient than others.

Filters are in a refrigerator, kitchen faucet filters and pitcher filters are activated carbon filters. Activated carbon filters remove an average of 73% of PFAS contaminants, but can vary.

“Reverse osmosis is more effective for a wide range of different compounds,” said Masarick.

Reverse osmosis filters reduce PFAS levels by 94% in water.

“Due to the small spill size in this membrane allowing water to pass through it, a lot of the contaminants stay outside,” Masarik said.

They are more efficient, but also more expensive. Aquatech in Wausau recommends getting a water softener and reverse osmosis system for best results.

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