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Open the original on idlw.internalIn short the story
Most North American cities use chloramine as disinfectant. Cannot be removed by standard Brita-style filters. Produces haloacetic acids linked to bladder cancer.
The read Glen’s take, in his words
Most American cities have switched from chlorine to chloramine as their primary disinfectant. What they don't advertise is that chloramine cannot be removed by a standard pitcher filter — the kind most people think is protecting them. It also produces haloacetic acids that are linked to bladder cancer. I spent a long time thinking a Brita or some plastic filtration system was enough. The research changed my mind. Keeping your drinking water safe is something we spent years focusing on. Let's arm you with information so you can make great choices. If you want to understand what's in your municipal water and what actually removes it, start here.
Questions answered from this page
What is this story about?
Most North American cities use chloramine as disinfectant. Cannot be removed by standard Brita-style filters. Produces haloacetic acids linked to bladder cancer.
Why did Glen Kerby choose this story?
Chloramine is the chlorine successor most municipal utilities quietly switched to — harder to filter, longer-lasting in the pipes, and far less studied in long-term human exposure. The piece lays out what utilities don't volunteer on their consumer confidence reports and why a basic Brita pitcher doesn't touch it. Anyone who drinks tap water deserves to know which disinfectant is in it and what carbon-block filtration actually removes.
What is Glen Kerby’s take?
Most American cities have switched from chlorine to chloramine as their primary disinfectant. What they don't advertise is that chloramine cannot be removed by a standard pitcher filter — the kind most people think is protecting them. It also produces haloacetic acids that are linked to bladder cancer.