Under The Sink Filtration for NYC High-rise Apt

Hello!

My endocrinologist urged that I get a reverse osmosis water filter for my apartment. I would like to just install something under my counter so my regular sink faucet dispenses filtered water. I live in a co-op in NYC so apartment work can be finicky which is why I’d like something seamless “plug and go” type of deal.

Any recommendations for brands / systems?