Observed arrival · 2026-11-09
Home Water HQ’s compatibility-checked filter builder
A water-filtration research site with a system builder that matches filters to water concerns and checks compatibility across the proposed setup.
- For
- Homeowners comparing water filters and treatment systems
- Worth noticing
- The builder flags mixed 1-inch and 3/4-inch connections for reducer fittings, while treating them as a note rather than a failure.
Field notes
The builder collects water source, test-flagged contaminants, hardness, bathroom count and treatment preferences before describing a stage-by-stage build. Its compatibility notes use bathroom count for a peak-flow planning estimate, identify the slowest stage as the build's flow limit, and flag mixed connection sizes for reducer fittings. The homepage lists 39 products and distinguishes certified coverage from manufacturer claims; it also links to an open dataset and cost-per-year information.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue