Stage 1: 5 Micron Sediment Filter
Micron filters remove dirt, debris, and even microscopic particles from water. The pore size of a filter cartridge is measured in microns. The smaller the micron rating, the finer the particulate removed. Which size micron filter you need depends on the size of the smallest particle that needs filtering from your water. A 5-micron filter, for example, removes particles as small as 5 microns. Anything smaller passes through the pores. Sediment filters are the most common type of micron filter. Sediment filters are similar to screen doors that allow air in and keep bugs out, except the debris blocked by the filter is microscopic.
Stage 2: 1 Micron Sediment Filter
5 micron – Will remove most particles visible to the naked eye in the first stage. and the 1 micron – Will remove particles which are too small to see without a microscope in this 2nd stage.
Stage 3: Activated Carbon Filter
Activated carbon filters are generally employed in the process of removing organic compounds and/or extracting free chlorine from water, thereby making the water suitable for discharge or use in manufacturing processes. Eliminating organics in potable water, such as humic and fulvic acid, prevents chlorine in the water from chemically reacting with the acids and forming trihalomethanes, a class of known carcinogens.
Stage 4: UF Membrane Filter 0.01 Micron
An ultrafiltration filter has a pore size around 0.01 micron. A microfiltration filter has a pore size around 0.1 micron, so when water undergoes microfiltration, many microorganisms are removed, but viruses remain in the water. Ultrafiltration would remove these larger particles, and may remove some viruses. Neither microfiltration nor ultrafiltration can remove dissolved substances unless they are first adsorbed (with activated carbon) or coagulated (with alum or iron salts).