Fridge filters are primarily designed to remove contaminants from water which directly (or adversely) affect the taste and odour of the water. Most, if not all, use activated carbon as the filtration media which is highly effective at removing chlorine, THMs, sediment and dissolved organics.
It is, yes, but once the water has reached its end-point (i.e. your fridge) chlorine really is just a 'residual' - something that has done its job but is no longer required. The main places your water will pick up bacteria are in the water network itself, the pipes are not perfectly clean, they sometimes leak and on older iron mains you get corrosion. Preventing contamination of water with bacteria during its transport is vital in stopping water borne diseases.
All cartridges, regardless of manufacturer, original or compatible, use activated carbon as the primary filtration media. Carbon is an absorption type media meaning it physically traps the contaminants which are passing through it. Carbon has a very very high surface area 1 gram of activated carbon has a total surface area of 500 square meters!
The problem with any media with this level of surface area is that it also gives bacteria places to thrive and over time activated carbon can become prone to the build-up of biological slimes and residues. Therefore it is a recommended (European wide) that they be changed at six monthly intervals.
The European Community Directive 2004/1935/EC "Food Contact Materials" is the main European Framework Regulation that lays down stipulations for materials which are intended to come into contact with foodstuffs. Product sold within the European Community should strictly meet the following requirements:
- Need to be manufactured in compliance with good manufacturing practice and quality standards
- Must not contain components that could endanger human health
- Shall not transfer their components into the food in quantities that could endanger health
- Must not change the composition of the foodstuff in an unacceptable way
- Must deteriorate the taste, colour or odour of foodstuffs
- Information about the product, manuals, labels should be fill and not mislead customers
All our products meet these requirements.