Whole-house filters are like putting a giant Brita in your basement—they treat ALL your water, from the garden hose to the toilet. For iron and manganese, you want a system with a catalytic oxidizer that lasts 10–15 years. Key tip: never buy a filter that claims to “eliminate” both metals with just carbon—that’s a lie bigger than your uncle’s fishing stories.
Amazon.com: iSpring F3WGB32BMKS 4.5” x 20” 3-Stage Whole House Water
