Water supply and sewage network per 100 km2
This API provides access to Local Data Bank (Bank Danych Lokalnych, BDL) subject P2441, covering water supply and sewage network density per 100 km2 under the housing economy and municipal infrastructure category. It offers yearly territorial time series for Poland, disaggregated from voivodship down to gmina level, with administrative units identified by TERYT codes. The dataset is maintained by GUS (Statistics Poland) and is accessible without authentication, supporting analysis of municipal infrastructure development across Polish territorial units.HOUSING ECONOMY AND MUNICIPAL INFRASTRUCTURE › NETWORK DEVICES. Local Data Bank (BDL) subject P2441: yearly territorial series for Poland (voivodship to gmina level), units keyed by TERYT ids.
Trust score
How is this computed?Weighted across five axes. Tap a ring for what it measures.
Data schema (8 fields)
Click a field to see example values.
| Field | Type | Description |
|---|---|---|
| variable_idVariable id | string | GUS variable id selecting the measured series of subject P2441 (the n1/n2 dimension combination): 79142=total / water supply network [km]; 79139=total / sewage network [km]; 79136=total / gas supply network [km]; 79143=in urban areas / water supply network [km]; 79140=in urban areas / sewage network [km]; 79137=in urban areas / gas supply network [km]; 79144=in rural areas / water supply network [km]; 79141=in rural areas / sewage network [km]; 79138=in rural areas / gas supply network [km]. |
| unit_levelUnit level | integer | Territorial aggregation level: 0=Poland, 1=macroregion, 2=voivodship (województwo), 3=region, 4=subregion, 5=powiat, 6=gmina. |
| year | integer | Reference year of the value (yearly series, back to 1995 for the oldest subjects). Filters server-side via the API's year parameter. |
| unit_idUnit id | string | 12-digit BDL territorial-unit id (macroregion+voivodship+region+subregion+powiat+gmina+type digits). An equality filter pins the unit server-side (unit-parent-id). |
| unit_nameUnit name | string | — |
| teryt_tercTeryt terc | string | TERYT TERC territorial code derived from the unit id (2 digits = voivodship, 4 = powiat, 7 = gmina incl. type digit; empty for NUTS-only units). |
| value | number | — |
| attr_idAttr id | integer | GUS value-attribute id (data quality/annotation flag). |
Schema captured from bdl 6 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.
Sample data (8 records)
| variable_id | unit_level | year | unit_id | unit_name | teryt_terc | value | attr_id |
|---|---|---|---|---|---|---|---|
| 79142 | 6 | 2002 | 011212001011 | Bochnia | 1201011 | 222.8 | 1 |
| 79142 | 6 | 2003 | 011212001011 | Bochnia | 1201011 | 223.5 | 1 |
| 79142 | 6 | 2004 | 011212001011 | Bochnia | 1201011 | 223.5 | 1 |
| 79142 | 6 | 2005 | 011212001011 | Bochnia | 1201011 | 234.5 | 1 |
| 79142 | 6 | 2006 | 011212001011 | Bochnia | 1201011 | 259.8 | 1 |
| 79142 | 6 | 2007 | 011212001011 | Bochnia | 1201011 | 259.8 | 1 |
| 79142 | 6 | 2008 | 011212001011 | Bochnia | 1201011 | 260.8 | 1 |
| 79142 | 6 | 2009 | 011212001011 | Bochnia | 1201011 | 264.8 | 1 |
Live sample captured at profiling time — values may have changed upstream.
Verification Status
Using the API
Configuration
- Base URL
- https://bdl.stat.gov.pl/api/v1/subjects/P2441
License
- ✓ Redistributable
- ✓ Attribution required
Query examples
curl -s 'https://bdl.stat.gov.pl/api/v1/data/by-variable/79142?unit-level=6&page-size=10&format=json&lang=en'Yearly values of variable 79142 (total / water supply network [km]) per territorial unit. Filters: unit-level=0–6, year=YYYY, unit-parent-id={12-digit unit id}; page-size ≤ 100. Anonymous limits: 5 req/s, 100 req/15 min.
Machine-readable & source
Embed this badge in a README or wiki — it always shows the latest verification state and quality tier.