# Building a Home Water-Treatment Setup (2026)

> Test-driven stack: sediment prefilter, carbon, RO or specialty media, and maintenance—matched to contaminants, not aesthetics.

*Published 2026-07-10 · Updated 2026-07-10 · By Elena Voss*

*Disclaimer:* Not site engineering advice. Contaminant match and local codes matter.

The short answer

Build a **test-driven stack**: know contaminants → sediment → carbon → RO/specialty as needed → maintain and re-test. See [water filtration guide](https://healthcanon.com/environmental-health/water-filtration-reverse-osmosis-guide).

Whole-house vs point-of-use is a cost and goal decision; drinking exposure often favors POU first.

## Stack logic

Wrong media for the molecule is expensive theater. Pitchers are not a universal stack.

## Sources

1. [EPA private wells](https://www.epa.gov/privatewells)
2. [NSF DWTU listings](https://info.nsf.org/Certified/DWTU/)
3. [CDC drinking water](https://www.cdc.gov/drinking-water/about/index.html)

---
Source: https://healthcanon.com/environmental-health/best-home-water-treatment-stack-2026
Index: https://healthcanon.com/llms.txt · Full text: https://healthcanon.com/llms-full.txt