Hi, I'm Shashank — ex-Apple & ex-Kohler engineer

The water in your home, explained by an engineer.

I read the spec sheets, pressure-test the claims, and translate the labels — so you pick the right filter for your house the first time.

Get my free report →

Shashank Varma — founder of Mr Water Geek

From the founder

After 9 years building water filtration at Kohler and hardware at Apple, I started Mr Water Geek because buying a water filter is far more confusing than it should be. These products impact our health more than we realize but are rarely designed with health in mind. I want to change that.

— Shashank Varma, founder

Where we stand

Trusted since: 2019
In-depth guides: 350+; written by an engineer, not an affiliate farm
Topics covered: 5; Filters & Guides, Water Science, Safety and Regulation, Hydration and Wellness
Our promise: Reader-funded
Every affiliate link disclosed

Know your water

Free Water Quality Report

What’s in your tap water?

Every public water utility in the U.S. is required to test your tap water and report what it finds. But those reports are buried, full of jargon, and easy to misread. Your water can meet legal limits and still contain things one should filter — like lead from old pipes, PFAS “forever chemicals,” or disinfection byproducts.

Enter your ZIP below. I’ll pull your utility’s latest results, flag anything above health guidelines, and email you a plain-English breakdown of what to filter — free.