INW Water Filtration LLC | INW Water Filtration is a veteran-owned company serving homeowners and businesses across North Idaho, including Coeur d’Alene, Post Falls, Hayden, Rathdrum, and surrounding areas. We specialize in water filtration systems, water softeners, and water testing services designed to remove impurities, reduce hard water, and improve the taste and safety of your water. Whether you’re dealing with hard water stains, chlorine taste, mineral buildup, or concerns about contaminants, our team provides expert solutions tailored to your home or well water. With over 50 years of combined experience in plumbing and water treatment, we deliver professional installation, reliable maintenance, and trusted local service that gives you clean, safe, great-tasting water every day.