A full home water filtration system removes contaminants from every tap in your house by treating water at the point it enters your main line. Expect to invest between $1,500 and $4,500 for the system itself, with whole-house setups typically running $800 to $5,500 when including installation. The right system depends entirely on what’s in your water, which is why most Seattle-area homeowners start with a water test rather than guessing.
Here’s the reality: municipal water meets federal safety standards, but those standards don’t address every contaminant that affects taste, plumbing, or long-term health. Chlorine …










