Superfund Sites

Source

EPA NPL · vintage 2024 · refresh cadence: annual

Direction of better

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

Default weight in Environment composite

15% 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: epa_sites, municipality_spatial_enrichment

Columns: [computed], epa_superfund_within_5km

Input field: superfundCount

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.superfund_sites",
  "name": "Superfund Sites",
  "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": "2024"
    },
    {
      "@type": "PropertyValue",
      "name": "fha_safe",
      "value": true
    }
  ],
  "valueReference": {
    "@type": "QuantitativeValue",
    "additionalType": "https://valifit.com/catalog/metric",
    "identifier": "environment.superfund_sites",
    "sameAs": "EPA NPL"
  },
  "mentions": [
    {
      "@type": "Dataset",
      "@id": "https://valifit.com/sources/epa-superfund",
      "identifier": "EPA_NPL",
      "name": "EPA National Priorities List (Superfund)",
      "url": "https://www.epa.gov/superfund/national-priorities-list-npl-sites-state",
      "sameAs": "https://www.epa.gov/superfund/national-priorities-list-npl-sites-state",
      "creator": {
        "@type": "Organization",
        "name": "United States Environmental Protection Agency"
      },
      "temporalCoverage": "monthly",
      "dateModified": "2026-04-01"
    }
  ]
}