The WWC762M is an activated carbon filter with a built-in 0.2 micron filter membrane. The filter membrane retains 99.99% of bacteria and pesticides in the water and the activated charcoal improves taste and smell. The AP3 C762M is designed for mounting under the sink or near where you need water. Provides consistently great tasting water for point of use water coolers and drinking water systems by reducing sediment and chlorine taste and odor. Reduces parasitic protozoan cysts and water-borne bacteria using a 0,2 micron nylon membrane wrapped around carbon block media (model AP3-C762.M) Sanitary Quick Change (SQC) design allows for fast cartridge change-outs without a need for a filter wrench.