Jon Bruner @jonbruner.bsky.social · 31/01/2025Do water filters actually do anything? We CT scanned several popular water filters before and after use to see what they’re able to keep out of your body. Here’s what we found… 🧵 172
Jon Bruner @jonbruner.bsky.social · 31/01/2025These are before-and-after @lumafield scans of a @Brita water filter; it’s filled with a blend of activated carbon and ion-exchange resin and claims to trap chlorine, sediment, and heavy metals like lead. The filter medium swells with use, and it also gets denser. How do we know? 130
