Pitcher, faucet, and fridge carbon filters are more accessible and cheaper than the other two options, but reverse osmosis systems are more effective at removing PFAS, Loria said. Carbon filters are a “simple way of reducing contaminants in your water,” he added.

"Bottled water is significantly more expensive than tap, but a middle-ground option might be purified tap water"

PFAS from drinking water may contribute to between 4,000 and 7,000 new cases of cancer every year, according to research from the University of Southern California.