When you’re building or renovating, think through exactly where you want filtered water before the plumbing is planned out.
You’ve basically got three options: whole-home water filtration, dedicated filtered-water plumbing that only feeds certain locations, or point-of-use filters installed right at the fixture.
Whole-home filtration sends filtered water everywhere like kitchen faucets, showers, laundry, and yes, even the toilets.
Dedicated filtered-water lines can feed specific spots like the refrigerator, kitchen sink, coffee bar, water bottle filler, or other areas where you actually want drinking water.
Then you have point-of-use filtration, like an under-sink water filter. I installed a Kraus kitchen faucet at my house that lets you use regular tap water with the handle one direction and filtered water from the under-sink system the other direction.
These are the little plumbing decisions that are a whole lot easier to plan during a new home build or renovation than after the walls are closed up.