/**
 * Adapter for the EPA Radon Risk Map of Ireland.
 *
 * Served from the EPA's GeoServer (not ArcGIS) via WFS 2.0. Layer and field
 * names pinned via DescribeFeatureType on 2026-07-10: layer
 * `EPA:RadonRiskMapofIreland`, fields `Risk` (string), `URL`, `URLtext`,
 * geometry `Shape` (MultiPolygon, native EPSG:29902). The CQL point filter
 * MUST carry an EWKT SRID (SRID=4326;POINT(...)) — a bare POINT is read in
 * the native Irish Grid CRS and matches nothing.
 */
export interface RadonResult {
    /** EPA's wording verbatim, e.g. "About 1 in 10 homes in this area is likely to have high radon levels". */
    risk: string;
    /**
     * Denominator of the EPA's "1 in N homes" phrasing (5, 10, 20), or null
     * if the wording doesn't parse. Lower N = higher risk.
     */
    one_in_n_homes: number | null;
    /**
     * True when ≥10% of homes are predicted above the reference level (the
     * "1 in 5" and "1 in 10" bands) — the threshold Ireland uses to designate
     * High Radon Areas. Null when the wording doesn't parse.
     */
    high_radon_area: boolean | null;
    epa_advice_url: string | null;
}
export declare function queryRadonRisk(lat: number, lng: number, fetchImpl?: typeof fetch): Promise<RadonResult[]>;
export declare const RADON_META: {
    readonly source: "EPA Radon Risk Map of Ireland (Environmental Protection Agency)";
    readonly source_url: "https://gis.epa.ie/EPAMaps/Radon";
    readonly licence: "CC-BY 4.0 (data.gov.ie)";
    readonly data_vintage: "EPA's current published radon risk banding, derived from measurement and geological data; area-level prediction, not a property measurement";
};