# The Home Water-Testing Panel for Homeowners (2026)

> What to test first on municipal vs well water, how to read results, and when to filter after—not before—data.

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

*Medical disclaimer:* Environmental guidance—not site engineering certification. Contaminated water with acute illness needs public-health pathways.

The short answer

**Read your CCR or test the well**, prioritize health-based contaminants for your geology and plumbing, then match treatment. See [EPA private wells](https://www.epa.gov/privatewells) and our [contaminants to test](https://healthcanon.com/environmental-health/best-water-contaminants-to-test-2026).

Filters without numbers are guesses; numbers without action plans are PDFs in a drawer.

## How to use this roundup

Identify source type, run the core panel, interpret with units, then treat and re-test.

## Sources

1. [EPA private wells](https://www.epa.gov/privatewells)
2. [CDC private wells](https://www.cdc.gov/healthywater/drinking/private/wells/index.html)
3. [EPA drinking water](https://www.epa.gov/ground-water-and-drinking-water)

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Source: https://healthcanon.com/environmental-health/best-water-test-panel-homeowners-2026
Index: https://healthcanon.com/llms.txt · Full text: https://healthcanon.com/llms-full.txt