we have the U-Line fridge/icemaker that fits under the counter in the cockpit.
Use a whole house type filter on the entire pressurized water system, plus renewable charcoal filters for drinking water at the galley sink and icemaker.
maintenance of the water system is key for us and it is bleached and flushed regularly, however we are careful NOT to allow any bleach to get into the charcoal filters.
I would add that this boat features a built into the hull, FIBEGLASS freshwater tank (40 gal)
We have had issues in the past with (supposed) certified drinking water hose at the dock getting GREEN inside.
Perhaps I'll start a new thread on THAT.
RWS