Water coolers in public areas have become extremely popular over recent years. One of the main reasons is because of the convenient manner in which they are able to provide cool drinking water to the public.

Water coolers that are outdoors are generally called water fountains and they may or may not provide cooled water depending on the design. They are often found in parks, schools, universities and so forth.

Water fountains have a special faucet that spurts water upwards at a slight angle - but very gently - so that one can easily bend down and have a drink of water. Some fountains have built in water filters to filter the municipal water before it reaches the faucet.

There are a number of different types of water coolers for indoor use. Indoor water filters can either be freestanding or attached to the water supply of your building or home. Free standing or portable water coolers are generally the most popular because they can be installed easily and do not require any especial plumbing skills and only need electricity to function properly. Free standing water coolers rely on a supply of water from an inverted water bottle which contains filtered water. The water bottle is inserted into the water cooler and may be obtained from bottled water suppliers when empty. When you use a freestanding water cooler, you can rest assured that the cool water dispensed from it has been properly filtered beforehand.

Water coolers that are attached to a water supply are often called point of use or POS water coolers. These water cooler may or may not have a built in filtration system that filters municipal or tap water in the system itself. The water is usually filtered through reverse osmosis before the water passes through a tap on the machine. POS water coolers do not always have as many features as the freestanding alternative as they are not all able to supply cooled water or heated water which most freestanding water machines are able to provide.