Water Quality & Filtration – How We Produce Great Tasting Water

All Cooler Sense water coolers are fitted with in line filtration systems to give you the finest quality water available.

The filters are at the heart of good quality water, so it’s important to use the best filters. There are lots of filters on the market and none are expensive, but they vary enormously in their effectiveness, the best use a very fine filtration followed by a solid block of carbon. This is why we use the Doulton System.

How we produce clear, pure, great tasting water in water coolers.

In terms of purity and hygiene, mains water quality is generally considered to be outstanding, but from a taste point of view it is sometimes criticised.

Typically the cause of this criticism is that, unlike bottled water, mains water is mildly chlorinated to ensure any potentially harmful bacteria are removed. Unfortunately, this can result in a residual taste and odour which reduces palatability.

The secret to producing great tasting water from your water cooler is to take this high quality water then remove the residual taste and odour to leave pure, crisp, refreshing water.

Cooler Sense water coolers are fitted with Doulton® Ceramic and Carbon Filters. These filters are substantially more effective than pour-through or granulated carbon filters in the removal of chlorine, due to their solid block carbon core technology. This produces an independently certified reduction in chlorine of over 97%, the result…great tasting water!!

The very fine ceramic outer filtration layer will also reduce sediment and is also effective against microscopic cysts such as Cryptosporidium, which, although very rare in drinking water, is not killed by chlorine. In addition, the filters are effective against E.Coli, Shigella, Salmonella, Typhia, Giardia and other pathogenic organisms.

The filters also carry independent approvals from NSF and WRAS.

We also have available for specific circumstances;

Ultracarb – lead reduction filters – these do all the Doulton Filter does, but will also help remove lead and heavy metals from the supply.

Scale inhibition filters – Contrary to popular belief it is not hardness that produces taste problems in mains drinking water, in fact many top bottled waters are harder than mains water. However these filters will inhibit scale formation if required.

Low density filters – for use on very low-pressure systems.

Water cooler Filters and Hot water dispenser filters

To get top quality water you need top quality water filters!

Details of water filters we fit are shown below. Click Here for more information on water & filters 

Cooler Sense is pleased to be working with Doulton to enhance our product offering and to supply the very best water cooler filters and hot water dispenser filters.

The choice of filters is predominately about 3 functions they perform.

1. The removal of sediment and organisms (the smaller the holes in the filter, the better the removal)

2. The removal of Chlorine. Chlorine is added to the water supply to kill bacteria. It is chlorine that is the cause of almost all taste complaints.

3. The control or removal of “hardness”. Hardness (Scale) is the result of dissolved calcium in the water. Generally considered healthy since it supplements the Calcium in our diets building strong teeth & bones. The resultant scale deposits can reduce the efficiency of items like kettles and boilers & is unsightly. Contrary to popular belief, it is chlorine not scale that causes taste issues.

Our Filter Options are as follows.

If you have further questions or are interested in other filters – Contact Us


Doulton® Supercarb. This is our most popular filter. It has a fine ceramic outer layer then a solid block of carbon, which results in very fine sediment filtration & a virtual elimination of chlorine.


Doulton® Ultracarb. This is the Supercarb filter with the addition of media to remove lead.


Scale Inhibition Filter. This filter contains granulated carbon for chlorine removal and poly phosphate to help prevent scale forming on metal surfaces.


Resin Scale Removal Filters. Removes scale forming minerals preventing scale build-up.


Low Pressure Filter. A simple granulated carbon filter with minimum resistance, allowing use where pressure is low.