The length of the sewerage network in relation to the length of the water supply network
This API exposes indicator P3459 from Poland's Local Data Bank (BDL), maintained by the national statistical office GUS. It falls under the Housing Economy and Municipal Infrastructure category, specifically the Network Devices subgroup, and measures the length of the sewerage network relative to the water supply network. Data are provided as yearly territorial series covering the whole of Poland, with values available from the voivodship down to the gmina level. Administrative units are identified using official TERYT codes, allowing integration with other Polish territorial statistics. Access is free and does not require authentication.HOUSING ECONOMY AND MUNICIPAL INFRASTRUCTURE › NETWORK DEVICES. Local Data Bank (BDL) subject P3459: 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 identifying the measured series within subject P3459.GUS variable id selecting the measured series of subject P3459 (the n1/n2 dimension combination): 454059=total [%]. |
| unit_levelUnit level | integer | Territorial aggregation level, from country (0) down to gmina (6).Territorial aggregation level: 0=Poland, 1=macroregion, 2=voivodship (województwo), 3=region, 4=subregion, 5=powiat, 6=gmina. |
| year | integer | Reference year of the yearly data value.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 identifier of the territorial unit.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 | Name of the territorial unit, e.g. town or gmina.Name of the territorial unit, e.g. town or gmina. |
| teryt_tercTeryt terc | string | TERYT TERC code of the territorial unit derived from unit_id.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 | Ratio of sewerage network length to water supply network length, as percent.Ratio of sewerage network length to water supply network length, as percent. |
| attr_idAttr id | integer | GUS attribute code flagging data quality or annotation for the value.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 |
|---|---|---|---|---|---|---|---|
| 454059 | 6 | 2003 | 011212001011 | Bochnia | 1201011 | 104.19 | 1 |
| 454059 | 6 | 2004 | 011212001011 | Bochnia | 1201011 | 171.41 | 1 |
| 454059 | 6 | 2005 | 011212001011 | Bochnia | 1201011 | 163.34 | 1 |
| 454059 | 6 | 2006 | 011212001011 | Bochnia | 1201011 | 148.07 | 1 |
| 454059 | 6 | 2007 | 011212001011 | Bochnia | 1201011 | 149.61 | 1 |
| 454059 | 6 | 2008 | 011212001011 | Bochnia | 1201011 | 149.94 | 1 |
| 454059 | 6 | 2009 | 011212001011 | Bochnia | 1201011 | 190.01 | 1 |
| 454059 | 6 | 2010 | 011212001011 | Bochnia | 1201011 | 189.91 | 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/P3459
License
- ✓ Redistributable
- ✓ Attribution required
Query examples
curl -s 'https://bdl.stat.gov.pl/api/v1/data/by-variable/454059?unit-level=6&page-size=10&format=json&lang=en'Yearly values of variable 454059 (total [%]) 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.