Worldwide wastewater treatment observatory · 
Poland
Aguas SB Observatory · public data to understand water
WWTP Zwoleń
Poland · official identifier PLMZ0470
10,000h-e design capacity (2022) · 653rd of 1,654 (tied with 12 others)
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier PLMZ0470 · reported size 10,000 h-e design capacity · received load 9,949 h-e · reported treatment: PS · data year 2022. 653rd of 1,654 records with reported size in the inventory of Poland (tied with 12 others); 0.02 % of the sum of those 1,654 records in h-e (sum of records, not national capacity); nearest inventoried plant at 11.0 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 (as reported to the EEA: PS) · reported levels |
|---|---|
| Nitrogen removal | yes |
| Phosphorus removal | yes |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 51.3525, 21.6011 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 |
REGULATORY REFERENCES
Referencia normativa: Poland
Regulatory framework of Poland · Directive (EU) 2024/3019: reported-capacity band 10,000 to 149,999 p.e.; 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: 9,949 p.e. of reported load; equivalent average load 7,751 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 (1,074 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Tczów | 11.0 km | 4,500 | 2,744 | primary and secondary |
| Centralna Oczyszczalnia Ścieków · Plmz0310 | 17.2 km | 28,635 | 25,247 | primary, secondary and tertiary |
| Bąkowiec | 20.4 km | 4,491 | 4,860 | primary and secondary |
| Lipsko | 22.4 km | 17,767 | 16,048 | primary, secondary and tertiary |
| Gminna Oczyszczalnia Ścieków W Jedlni-Letnisku | 22.4 km | 6,487 | 6,197 | 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 Zwoleń report?
Reported size: 10,000 h-e design capacity. Received load: 9,949 h-e. Units are retained without conversion.
What treatment is reported?
Treatment PS. Nitrogen, phosphorus and UV are shown only when explicitly reported.
How much energy would a reference plant use with the load of Zwoleń?
Aguas SB simulator reference scenario for 9,949 p.e. of reported load: 310,079 kWh per year (40.0 kWh per p.e. of average load), with aeration as 54 % 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.