I honestly don't know. IIRC, you need an ion exchange filter (but they're bad for other reasons) or a reverse osmosis one certified for Cr(VI). https://www.ewg

I honestly don't know. IIRC, you need an ion exchange filter (but they're bad for other reasons) or a reverse osmosis one certified for Cr(VI). https://www.ewg.org/tapwater/ https://www.ewg.org/tapwater/ has a pretty decent guide.