Radon Risk

Source

EPA Radon Zones · vintage 2015 · refresh cadence: static

Direction of better

Lower values are better. Used to rank candidate towns/properties; lower score = stronger fit.

Default weight in Environment composite

10% of the Environment composite by default. Users can override this weight in their intake; the displayed score reflects the user's chosen weighting, never a fixed default.

Where the data lives

Tables: radon_tiers, municipality_spatial_enrichment

Columns: radon_tier, radon_tier

Input field: radonTier

JSON-LD example

Every value emitted by ValiFit (in /api/v1, MCP responses, on-page JSON-LD) carries a propertyID set to this metric_id, so AI clients can resolve it back here in one round-trip.

{
  "@type": "PropertyValue",
  "propertyID": "environment.radon_risk",
  "name": "Radon Risk",
  "value": "example",
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "composite",
      "value": "Environment"
    },
    {
      "@type": "PropertyValue",
      "name": "level",
      "value": "city"
    },
    {
      "@type": "PropertyValue",
      "name": "direction",
      "value": "lower_better"
    },
    {
      "@type": "PropertyValue",
      "name": "source_year",
      "value": "2015"
    },
    {
      "@type": "PropertyValue",
      "name": "fha_safe",
      "value": true
    }
  ],
  "valueReference": {
    "@type": "QuantitativeValue",
    "additionalType": "https://valifit.com/catalog/metric",
    "identifier": "environment.radon_risk",
    "sameAs": "EPA Radon Zones"
  }
}