Worldwide wastewater treatment observatory · 
Poland
Aguas SB Observatory · public data to understand water
WWTP Oczyszczalnia Ścieków w Siedlcach
Poland · official identifier PLMZ0050
175,000h-e design capacity (2022) · 58th of 1,654
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier PLMZ0050 · reported size 175,000 h-e design capacity · received load 172,907 h-e · reported treatment: PST · data year 2022. 58th of 1,654 records with reported size in the inventory of Poland; 0.33 % of the sum of those 1,654 records in h-e (sum of records, not national capacity); nearest inventoried plant at 6.6 km · 2 within 10 km. Reported data with their source; estimates are not measurements of the plant.
Aguas SB does not manage this wastewater treatment plant.
WHAT THE DATA REPORT
Reported data official data · 2022
| Treatment | primary + secondary + tertiary (more stringent) (as reported to the EEA: PST) · reported levels |
|---|---|
| Nitrogen removal | yes |
| Phosphorus removal | yes |
| UV disinfection | yes |
| Status | active |
| Reported coordinates | 52.1886, 22.2564 precision reported by the source: level 2 what it means |
| Source and year | European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · dataset record |
FUENTES PÚBLICAS
What public sources report
Population of the served area (Siedlce): 88,324 inhabitants (2024, Polish Waters).
Documented milestones
- 2024-06-14 · The national programme recorded technical acceptance of a type MO investment at the plant. Polish Waters
Other published data
| Mean annual volume treated reported in the 2022 cycle | 6,499,000 m³/year (2022) · source |
|---|
Facts taken from public documents, with their date and link; an authorisation, a project or a planned capacity do not prove operation or quantities actually treated. Aguas SB editorial layer, lot L05; it does not change the official data.
REGULATORY REFERENCES
Referencia normativa: Poland
Regulatory framework of Poland · Directive (EU) 2024/3019: reported-capacity band 150,000 p.e. or more; obligations are set by agglomeration load, not by the capacity of this plant. Individual applicability is not determined in this profile.
SCENARIO
Reference energy scenario for this load estimate · simulator engine
what this estimate is · Inputs: 172,907 p.e. of reported load; equivalent average load 134,764 p.e. with the reference profile of Poland (hypothesis with reported load and reference profile; not a measurement). Open this scenario in the simulator · how it is calculated and what it is not.
Reference scenario computed on the server from the reported load and the country profile; an estimate, not a measurement. The simulator recomputes it when opened.
WATER THAT COULD RETURN
Reuse potential
what this estimate is · Volume estimated from the reported load (18,674 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Żelków | 6.6 km | 1,950 | 1,845 | primary and secondary |
| Przygody | 7.1 km | 4,800 | 2,384 | primary and secondary |
| Skórzec | 12.5 km | 6,000 | 5,447 | primary and secondary |
| Mokobody | 13.6 km | 3,745 | 2,085 | primary and secondary |
| Kotuń | 14.2 km | 3,200 | 3,967 | primary and secondary |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP Oczyszczalnia Ścieków w Siedlcach report?
Reported size: 175,000 h-e design capacity. Received load: 172,907 h-e. Units are retained without conversion.
What treatment is reported?
Treatment PST. Nitrogen, phosphorus and UV are shown only when explicitly reported.
How much energy would a reference plant use with the load of Oczyszczalnia Ścieków w Siedlcach?
Aguas SB simulator reference scenario for 172,907 p.e. of reported load: 3,953,099 kWh per year (29.3 kWh per p.e. of average load), with aeration as 62 % of consumption. Estimate with the country reference profile; not a measurement of the plant.
SOURCE AND CORRECTIONS
Source
reported data · European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · data 2022 · edition 2023 · source licence: CC BY 4.0 · JSON for this plant · suggest a correction · catalogue 2026-11-06. Reported data, not a current inspection; no compliance judgements.