But wait there is more! I know I have not finished this in a timely manner, but I have been going back to work where my expertise is much in need. In two part time weeks I think I have spent a good quarter of it on the phone explaining thing about water and ticks and etc...so with out any more ado, we go into the concept of adsorption and absorption filters.
A carbon filter is a great example of an adsorption and absorption because they collect particles on the inside of the activated carbon (gases like radon, Volatile Organic Compounds (VOCs) and other larger particles like pesticides. They also adsorb particles like lead and arsenic onto the surface. They are a highly recommended treatment for general safety, radon removal and even reduction of heavy metals. They will remove chlorine and its byproducts.
The issue is that you can not tell physically when they are "loaded" and can not adsorb or absorb any more, in which case they will not work. Changing the filters regularly (once every 6 months) will work, but you maybe going through extra expense. Given the content of the water, an installer should be able to tell you how long it will last and then will shave a couple of months off that to be safer.
Carbon is not the only adsorption filter, there are mangenous rock filters, working on the same concept and they will remove iron and manganese effectively. They will also back wash with water (preferably filtered water) to re generate themselves for a longer life span. these work very effectively and are recommended if you have that kind of a problem.