re: Water filtration system, just starting research

The only issue about using a whole house filter is that it’ll knock out the Cl2 or chloramines in all of your water pipes. If a line stays stagnant for a while, it can grow stuff in that line because there is no Cl2 to kill it or additional Cl2 to kill it when the line is finally run again. This can spread throughout your piping.
I work in the water treatment business and this is something we have to watch for on dead end lines and sections of houses that aren’t used often. We will get complaints from elderly people that have 2 story homes and nobody uses the upstairs. Then when they finally do use it, the water is awful and it’s because the Cl2 had dissipated in the lines and stuff began to grow. Just make sure turn your water lines over and don’t let water set up for long periods of time.

I am not saying this will happen but that it can.