It is important to have a sediment filter before the carbon filter in a water filtration system because sediment filters remove larger particles and debris, such as sand, dirt, and rust, from the water. These larger particles can clog the pores of the carbon filter, reducing its effectiveness in removing smaller contaminants, such as chlorine, pesticides, and volatile organic compounds (VOCs).
By removing larger particles with a sediment filter before the water reaches the carbon filter, the carbon filter can operate more efficiently and last longer. This ensures that the water is properly filtered, and that the carbon filter is not overworked or damaged by the presence of larger particles. Overall, having a sediment filter before the carbon filter improves the quality and effectiveness of the water filtration system, and helps to protect the longevity of the carbon filter.