There are many choices you have for filtering your drinking water in your house. Some are in-expensive, while others cost a lot. Deciding on what you want to use depends on the quality of water you have, including the chemical makeup of the water. You should test your water to see how clean it is. You can filter your water from contaminants ranging from whole house systems to pitcher and gravity filters.

There are reverse osmosis systems that are whole house systems, which are very effective and mostly used when you have a well. The system can also be very costly, up to $6,000. Reverse osmosis works by filtering materials from the water by using pressure to force the water molecules through a semi permeable reverse osmosis membrane. Another option is a reverse osmosis system that attaches under the sink. It is far less expensive than a whole house system. Ranging from $200 to $500. This is a point of use unit, therefore it only affects where you are using the water to drink. If you have it under your kitchen sink, the other faucets will not be filtered.

Another option is a water softener. Hard water contains a large amount of calcium and magnesium. It can clog pipes and cause problems with soap and detergent not dissolving in water. The water softener removes the ions that cause the water to be hard, the calcium and magnesium ions . You use a water softener unit and connect it directly to the water supply.

You can also have a refrigerator pitcher water filters. The best recommended is the PUR filter, which is in more reviews than any other water filter. The two-stage filter seems to be more effective than competing pitchers in removing contaminants, and the taste seems to be more appealing. Although the filter isn't designed to treat water for any kind of bacteria, tests show that it does remove some coliform bacteria as well as common pharmaceuticals. You can store the pitcher in the refrigerator for cold drinking water. but, remember that the filters can clog fast and need to be replaced often.

The final option can be the under-sink water filters. These require a professional for installation. Filters last longer than on a faucet-mount filter, around six months or so. Depending on the manufacturer, you may have to by that companies filters only. Culligan has its own replacement filters, and there are no other company that makes it, which means it costs more than other filters.