Whole house water filter systems are some of the most popular filtering solutions currently used throughout the country. These systems are so popular because they’re effective, and because they produce high-quality water.

Point-of-use filters for home use include granular-activated carbon filters (GAC) used for carbon filtering, depth filter, metallic alloy filters, microporous ceramic filters, carbon block resin (CBR), microfiltration and ultrafiltration membranes.

Some filters use more than one filtration method. An example of this is a multi-barrier system. Jug filters can be used for small quantities of drinking water. Some kettles have built-in filters, primarily to reduce limescale buildup.Standard Flowmatic cartridge style filters are added to existing plumbing; the filter cartridges are cylinders 10 inches (254 mm) long by 2.5 inches (64 mm) in diameter. They are made by multiple manufactures and are available in 0.5-100 micron ratings as well as activated carbon.[2]

Some common substances that filtration does not remove are arsenic, bacteria, chlorides, fluoride, nitrates, perchlorates, pharmaceuticals, sodium and viruses