It is very necessary. There are so many different technologies. There’s multi-media filtration, distillation, reverse osmosis, and UV disinfection systems. I got my water filter systems from here…

I not agreee!!!

there are tons of chemicals & drugs in the water :: you want to get one that also removes sodium fluoride like berkey or ecoloblue

There are different kinds of water filters. Some that attach to a faucet, others are built into pitchers, and some go under the kitchen sink. Reverse osmosis will make your water the most pure, but will also remove minerals and things that give the water a good taste. RO also wastes water as it washes away the impurities.

A basic carbon filter is the cheapest, and will improve taste by removing chlorine and organic compounds. The main drawback of any filter is that you will need to replace cartridges from time to time. There are various impurities and toxins that can creep into the water supply, and if you have a filter, you may avoid these in your drinking water. Overall, a home filter will save over buying bottled water, and is safer than tap water.

I’d say if you’re going to bother putting in a filter, go with a reverse osmosis system. Otherwise, you’re not removing all that much with just a filter. I guess a negative is that a system that is worth anything is going to start out at a cost of $250.