We compare the filters, read the spec sheets, and translate the labels — so you can pick what your kitchen actually needs.
Enter your ZIP code and get a free report based on EPA data — contaminants, utility violations, and what to filter.
Check your water →What 60 years of research actually says about the fluoride added to your tap water — and where the debate still stands.
Read the breakdown →The eight-glasses-a-day rule, examined — what hydration scientists actually recommend by body weight, climate, and activity.
Run the numbers →Calcium, magnesium, sodium — how much your water contributes to your daily intake, and which minerals are worth caring about.
See the science →
I'm an ex-Apple, ex-Kohler mechanical engineer. I started Mr. Water Geek because buying a water filter is far more confusing than it should be — and the answers should come from engineering and evidence, not marketing.
One slow read each Sunday on the water in your home.
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