Audit Methodology
Hydrolity turns public water data into local hardness pages that are easy to compare. The goal is not to replace a laboratory test. The goal is to give households a fast, practical baseline before they spend money on testing, treatment, or a water softener.
Hardness, pH where available, and local comparison context.
Static pages generated from normalized records, not live per-visit database queries.
Best for scale, soap performance, appliance wear, and treatment research.
What the current static build contains
Hydrolity is built from a local data snapshot so public pages can load fast and stay stable without querying Supabase on every visit. This is intentionally boring infrastructure: fewer moving parts, fewer runtime failures, and lower ongoing cost.
Data Sources
- Municipal and regional water utility reports.
- Public environmental monitoring datasets.
- Open records from national and local agencies.
- Country-specific public registries where they are available, such as SINAC references for Spain.
Normalization
Incoming records are normalized into a common structure by location (country, region, city, postal code), hardness value, and pH where available. Invalid or incomplete values are flagged and excluded from indexable pages.
US pages use PPM and grains per gallon because those are common in softener sizing. Spain pages use ºfH because that is the more natural local format for many hardness discussions. We avoid mixing units without naming them clearly.
How to use the data safely
Good first use
Check whether scale, soap residue, dry skin complaints, or appliance buildup match the local hardness baseline.
When to test
Test your tap when symptoms disagree with the public baseline, when you use a private well, or before making a health-related decision.
Before buying
Use the local report to size the decision: sometimes cleaning habits are enough, sometimes a softener quote deserves a proper test.
Quality Controls
- Duplicate location checks per source cycle.
- Range validation for hardness and pH fields.
- Indexing safeguard: pages with missing core metrics are marked noindex.
- Static build checks for search behavior, internal links, metadata, canonical tags, and JSON-LD validity.
What Hydrolity does not claim
A ZIP-code page cannot prove what comes out of a specific tap. Plumbing, private wells, building filters, heaters, and local distribution changes can shift the final result. If the question is health, contamination, or a legal/compliance decision, use a certified lab test.
For everyday hard-water decisions, the public-data baseline is still useful: it helps you decide whether scale is likely a local water issue, a property-specific issue, or not worth spending money on yet.