Waterstone Started as a super high quality filtration faucet specialist. They've branched out to super quality kitchen faucets and more. Waterstone bar and convenience faucets and Waterstone pot fillers are more than just beautiful. Many Waterstone faucets come with filtration built in. Waterstone makes dedicated cold water faucets and dedicated hot water faucets, both with available filtration features. Hot water filtration is not easily found since hot water breaks down many filters, Waterstone is a great choice.