Why do I need to filter the whole house water? Does it smell bad? I am used to softening most, not all of the house water. The softener salt will leave a taste in the water and can impact plants and grass from hose bibs. Even if it does not matter to the plants, a significant amount of you water use is irrigation. Why does it need to be filtered? The same would go for the pool and spa. In this case the clorine system is doing that job.
For drinking water, as you indicated adding the RO system at select locations would be enough. That is usually only one or two locations. The amount of water used for our consumption would be a small portion of the total. Again, why filter all of the water?
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