waterfilter for eagle cap 1165

So I thought there would be a filter for this faucet as it is for drinking water only. looking under the sink the line is cut to the little faucet and has it's sperate water line with a shut off valve for it. I understand that i can put a filter inline where the line is cut to the faucet, I was just hoping someone else had a 1165 and would say yes there should be a filter for that faucet and the filter is a ....... and should be under the sink or should be ....... The kitchen faucet works just fine.