KDF was invented in the 1970s by a guy named Don Heskett, who probably had a magnificent mustache. That means your grandparents might have been bathing in this tech while listening to Fleetwood Mac, totally unaware.
Also, it’s used in hospitals to clean dialysis water—so if it’s good enough for kidneys, it’s good enough for your morning tea. No pressure, though.
What Is KDF Filter Media: How It Works In Water Filtration
The "Gross but Cool" Part
When KDF media gets old, it doesn’t just sit there—it slowly turns into copper oxide, which looks like rusty pennies. But here’s the kicker: that weird gunk actually helps kill algae and fungus. So your filter becomes a zombie that fights for you even in retirement.
You can’t say that about your old Brita—that thing just grows mold and judges you.
