A point-of-use filter is a type of water filtration system that is installed at a specific location where water is consumed or used, such as a faucet or shower. It is designed to remove contaminants from the water, providing clean and safe drinking water or water for other purposes.

Point-of-use filters can include different types of filters, such as carbon filters (including granular activated carbon filters), adsorptive media filtration, aeration and filtration, anion exchange, and reverse osmosis. For more information on which system you should use, the Minnesota Department of Health has developed a Home Water Treatment Guide that covers treatment for any common constituent in well water.

One type of POU filter is activated carbon filtration. It is used to reduce bad tastes, odors, and low concentrations of organic chemicals (such as pesticides and solvents) from your water. They may also reduce lead, copper, and mercury in your water but are not suitable for removing major inorganic ions or metals. For high water volume, larger filters are available that may require professional installation and maintenance.

These filters are relatively inexpensive and easy to find and use. The cost of point-of-use filters can vary, with initial costs ranging from $10 to $100 and maintenance costs of $10 to $100 every few months for filter replacement.

If you are considering installing a point-of-entry treatment system, it is recommended to consult with a professional in your area to determine the best system for your specific needs and to ensure proper installation and maintenance. The most important advice we can provide you is if you are going to add treatment to your home water system, be sure the treatment device has been certified to provide the desire result by an independent third-party certification organization.