Primo 900114 Ceramic Bottled Water Cooler Dispenser vs Culligan 12-Cup Water Filter Pitcher with ZeroWater Technology: which is safer?

Where these two actually differ

• We flag Bacterial biofilm growth in tank and tubing, Gasket or seal degradation over time, Contamination from bottled water supply chain and Mold or mildew in drip tray on the Primo Water and not on the ZeroWater.
• We flag Bacterial growth in reservoir if filter unmaintained or water stored too long, Filter cartridge degradation and particle escape if overfilled or misseated and Ion-exchange resin saturation without visible warning on the ZeroWater and not on the Primo Water.
• The Primo Water is Ceramic water tank, stainless steel housing where the ZeroWater is Activated carbon and ion-exchange resin filter media, which is most of the difference in these two grades.
• These two are 5 points apart, close enough that price and fit should decide it rather than our grade.