The Academy · How small is the problem?
The Filtration Spectrum
Every water problem has a size — and every filter has a limit.
Find your problem on the scale, and the spectrum shows you what catches it,
and what it slips straight through.
Tap anything — a contaminant above the line, a technology below it.
particles & sediment
living organisms
dissolved — no filter can "strain" these
capture technologies
partly catches it