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Historical Inventory of Industrial Sites and Service Activities in Pays de la Loire (BASIAS)( BASIAS ) Inventaire historique de sites industriels et activités de service en Pays de la Loire

( BASIAS ) Inventaire historique de sites industriels et activités de service en Pays de la LoireHistorical Inventory of Industrial Sites and Service Activities in Pays de la Loire (BASIAS)

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This API provides access to BASIAS, a French national inventory of former industrial sites and service activities that may present soil or environmental contamination risks, focused on the Pays de la Loire region. Data collected through regional and departmental surveys is archived in the national BASIAS database, maintained by public authorities and made available online. The dataset includes site locations, activity types, and operational periods, and is primarily used for land-use planning, environmental risk assessment, and due diligence prior to property transactions or redevelopment projects in the region.Inventaire des anciennes activités industrielles et activités de service. Les données recueillies dans le cadre de ces inventaires sont archivées dans une base de données nationale, BASIAS (Base des Anciens Sites Industriels et Activités de Service) disponible sur Internet. Cette base de données...

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Trust score

How is this computed?

fair

Weighted across five axes. Tap a ring for what it measures.

Data schema (13 fields)

Filterable via the API (11)

gml_idid_basiasraison_socadresseid_communecommuneocc_siteconnaissanurl_basiascommunesdepartement

Click a field to see example values.

Fill	Field	Type	Description
—	geo_point_2dLocalisation	geo_point_2d	Geographic point coordinates (latitude, longitude) of the site.Geographic point coordinates (latitude, longitude) of the site.
—	geo_shapeShape	geo_shape	Geometric shape of the site as a GeoJSON feature.Geometric shape of the site as a GeoJSON feature.
—	gml_idIdentifiant	text	Unique GML identifier for the record.Unique GML identifier for the record.
—	id_basiasId basias	text	BASIAS database identifier for the site.BASIAS database identifier for the site.
—	raison_socRaison sociale	text	Company or business name associated with the site.Company or business name associated with the site.
—	adresse	text	Street address of the site.Street address of the site.
—	id_communeId commune	double	INSEE code identifying the commune.INSEE code identifying the commune.
—	communeCommune	text	Name and INSEE code of the commune.Name and INSEE code of the commune.
—	occ_siteOccupation site	text	Current occupation status of the site, e.g. in activity.Current occupation status of the site, e.g. in activity.
—	connaissanConnaissance	text	Level of knowledge or inventory status of the site.Level of knowledge or inventory status of the site.
100%	url_basiasUrl basias	text	Link to the site's detailed record on the BASIAS website.Link to the site's detailed record on the BASIAS website.
100%	communes	text	Name of the commune where the site is located.Name of the commune where the site is located.
100%	departement	text	Name of the department where the site is located.Name of the department where the site is located.

Schema captured from opendatasoft 4 days ago.

Query the data

Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.

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Sample data (5 records)

Record 1gml_id: n_basias_p_r52.6071 · adresse: Chemin BOCAGE (DU)

{
  "gml_id": "n_basias_p_r52.6071",
  "adresse": "Chemin BOCAGE (DU)",
  "commune": "AVRILLE (49015)",
  "communes": "Avrillé",
  "occ_site": "En activité",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Point",
      "coordinates": [
        -0.579641863385402,
        47.50362251902075
      ]
    },
    "properties": {}
  },
  "id_basias": "PAL4900489",
  "connaissan": "Inventorié",
  "id_commune": 49015,
  "raison_soc": "BATI-DECOR (SOCIETE), TRAITEMENT DU BOIS / MENUISERIE",
  "url_basias": "http://basias.brgm.fr/fiche_synthetique.asp?IDT=PAL4900489",
  "departement": "Maine-et-Loire",
  "geo_point_2d": {
    "lat": 47.50362251902075,
    "lon": -0.5796418633854021
  }
}

Record 2gml_id: n_basias_p_r52.3239 · adresse: Route CHAUVERIE (de)

{
  "gml_id": "n_basias_p_r52.3239",
  "adresse": "Route CHAUVERIE (de)",
  "commune": "MAYENNE (53147)",
  "communes": "Mayenne",
  "occ_site": "En activité",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Point",
      "coordinates": [
        -0.606268252704321,
        48.288451317416225
      ]
    },
    "properties": {}
  },
  "id_basias": "PAL5300770",
  "connaissan": "Inventorié",
  "id_commune": 53147,
  "raison_soc": "GUILLOIS Pierre ENTREPRISE / DEPOT DE DECHETS METALLIQUES",
  "url_basias": "http://basias.brgm.fr/fiche_synthetique.asp?IDT=PAL5300770",
  "departement": "Mayenne",
  "geo_point_2d": {
    "lat": 48.288451317416225,
    "lon": -0.6062682527043209
  }
}

Record 3gml_id: n_basias_p_r52.533 · adresse: Rue Tisserands (des)

{
  "gml_id": "n_basias_p_r52.533",
  "adresse": "Rue Tisserands (des)",
  "commune": "ARCONNAY (72006)",
  "communes": "Arçonnay",
  "occ_site": "En activité",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Point",
      "coordinates": [
        0.091654187997739,
        48.39516837541392
      ]
    },
    "properties": {}
  },
  "id_basias": "PAL7202473",
  "connaissan": "Inventorié",
  "id_commune": 72006,
  "raison_soc": "GALOUX, AVANT SCI LE BOIS JOLI, scierie",
  "url_basias": "http://basias.brgm.fr/fiche_synthetique.asp?IDT=PAL7202473",
  "departement": "Sarthe",
  "geo_point_2d": {
    "lat": 48.39516837541392,
    "lon": 0.09165418799773914
  }
}

Record 4gml_id: n_basias_p_r52.6706 · adresse: 95 Route DE PISSOT,

{
  "gml_id": "n_basias_p_r52.6706",
  "adresse": "95 Route DE PISSOT,",
  "commune": "SAINT-HILAIRE-DE-RIEZ (85226)",
  "communes": "Saint-Hilaire-de-Riez",
  "occ_site": "Activité terminée",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Point",
      "coordinates": [
        -1.953289677897907,
        46.73928929756719
      ]
    },
    "properties": {}
  },
  "id_basias": "PAL8503738",
  "connaissan": "Inventorié",
  "id_commune": 85226,
  "raison_soc": "SIRAS Daniel / GARAGE",
  "url_basias": "http://basias.brgm.fr/fiche_synthetique.asp?IDT=PAL8503738",
  "departement": "Vendée",
  "geo_point_2d": {
    "lat": 46.73928929756719,
    "lon": -1.9532896778979072
  }
}

Record 5gml_id: n_basias_p_r52.9369 · adresse: 10 Rue Ranzai (du)

{
  "gml_id": "n_basias_p_r52.9369",
  "adresse": "10 Rue Ranzai (du)",
  "commune": "NANTES (44109)",
  "communes": "Nantes",
  "occ_site": "En activité",
  "geo_shape": {
    "type": "Feature",
    "geometry": {
      "type": "Point",
      "coordinates": [
        -1.525076102010914,
        47.25035870609213
      ]
    },
    "properties": {}
  },
  "id_basias": "PAL4403532",
  "connaissan": "Inventorié",
  "id_commune": 44109,
  "raison_soc": "SICAFRANCE Ste,Récupération de vieux métaux",
  "url_basias": "http://basias.brgm.fr/fiche_synthetique.asp?IDT=PAL4403532",
  "departement": "Loire-Atlantique",
  "geo_point_2d": {
    "lat": 47.25035870609213,
    "lon": -1.5250761020109136
  }
}

Live sample captured at profiling time — values may have changed upstream.

Verification Status

Using the API

Configuration

Base URL: https://data.paysdelaloire.fr/api/explore/v2.1/catalog/datasets/234400034_basias-inventaire-historique-de-sites-industriels-et-activites-de-serv

License

Licence Ouverte 2.0 (France / Etalab)Open

✓ Redistributable
✓ Attribution required

Query examples

curl -s 'https://data.paysdelaloire.fr/api/explore/v2.1/catalog/datasets/234400034_basias-inventaire-historique-de-sites-industriels-et-activites-de-serv/records?limit=20' -H 'Accept: application/json'

First 20 records of the dataset as JSON.

Uses the Opendatasoft Explore v2.1 syntax — supports select, where, group_by and order_by.

Full API documentation ↗

Rate limits

5 000 req/day

per ipmeasured

observed 4 days ago

Dataset

Volume & freshness

Records

12k

12496

Last upstream update

23 days ago

2026-09-30

License

No license declared upstream.

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Source: opendatasoft

Machine-readable & source

JSON

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