When looking for a new cooler it is important to keep these things in mind:
1. Stainless steel reservoirs give any water a better taste and are more sanitary than recycled plastic.
2. All components that come into contact with drinking water must be sterilized. The cooler should have removable taps as this is the most important area to sterilize.
3. If the water cooler will be placed in an area with direct or indirect sunlight, it is best to choose a model with a solid cover. If you already have a water cooler and it is in a bright area, purchase a bottle cover. Bright light and heat will promote the growth of bacteria within the cooler.