iSpring Multi-layer filtration allows for less clogs and minimal pressure loss. iSpring carbon block filter uses high quality coconut shell carbon and highly compact fabrication tech for maximum filtration efficiency and filter life. iSpring iron manganese filter efficiently reduces iron (max 3.0 -> 0.01 ppm) and manganese (max 1.0 -> 0.01 ppm) Filtration Capacity: 50k gal at 3.0ppm for iron If you are on well water, we recommend getting your water tested before purchasing the product for the best results. If you have any questions or need any product recommendations, please feel free to reach out. We are happy to help! 100,000-gallon capacity replaceable highly compact coconut shell activated carbon filter provides a full year of clean water for your entire family. The WGB32B series is equipped with pp layered sediment filter and coconut shell carbon block filter. The densely packed carbon block filtration media provides more effective contaminant removal and longer filter life. This whole house system removes up to 95% of sediment, chlorine, chloramines, chemicals, heavy metals and other contaminants that create color, foul tastes and odors. (Tested by SGS, 2018) The WGB32BM whole house filtration system is the ideal "point of entry" filtration system for cleaning up well water. Unlike "point of use" systems (like reverse osmosis systems) that are installed to supply water to a specific faucet, the WGB32BM filters your water from the source. This means water from every output in your home will have passed through the three filtration stages of the WGB32BM. So what exactly do these three stages of filtration offer? Used as the first stage of defense on the system, the stage 1 housing holds a 5-micron high-capacity polypropylene sediment filter. This filter removes dirt and other various larger sized particles from the water that can clog the following filters. The second stage of the WGB32BM houses a 5-micron CTO coconut shell carbon block filter. Block carbon is more effective than other forms of carbon in that it is finely ground up carbon packed into a solidified block. This means they have a higher density than other types of carbon filters, and are therefore more effective in removing their targeted contaminants. The carbon block filter knocks out bad tastes and odors, removes up to 95% of chlorine from the water, and is highly effective on organic chemicals (VOCs) like pesticides, herbicides, and industrial chemicals. The third stage of the WGB32BM has an iron and manganese reducing filter - also great for the plethora of heavy metals found in well water sources. The FM25B iron and manganese reducing filter is only included with the WGB32BM, as it is not needed for most municipal water supplies that the WGB32B targets. If you are on municipal (city) water or a generally clean water supply, you may want to consider the WGB32B over the WGB32BM. For removing the common contaminants and heavy metals found in the majority of well water supplies however, the WGB32BM fits the bill.