To get pure home water that is good for you, it is a must to consider what type of water filtration system you want
. You can filter only your home water, your bath water or the water for your entire home. The last of which would cost you a lot more to filter the water for your entire home, and it may not be entirely necessary if you do not intend to drink your bath water. Even so, filtering your home water supply would be more cost effective than buying bottled water and you would be saved from the dangers of tap water. Also if you are using one of the safer methods of water purification you will not be robbing yourself of essential minerals.
Reverse osmosis pure water systems are not well suited for residential use. They raise your electricity bills, create many gallons of waste water per gallon of usable water. Reverse osmosis pure water systems require the installation of a separate drain and they break down without you being aware of it. Also keep in mind, when reverse osmosis systems work, they work too well and your pure home water is completely stripped of all essential minerals that you need to survive.
Residential reverse osmosis systems are much more expensive than multi-stage selective filtration devices. The multi-stage filtration devices are actually more effective providing more than one way to filter your water. Reverse osmosis pure water systems for residential areas are less complicated versions of the systems that treat rivers and lakes in rural areas. However, the technology itself is dead and should be phased out in favor of more effective and more cost effective methods of pure home water filtration.