Worldwide wastewater treatment observatory · 
Slovenia
Aguas SB Observatory · public data to understand water
WWTP UWWTP_LJUBLJANA (ZALOG)
Slovenia · official identifier SI_KCN_00098
360,000h-e design capacity (2022) · 1st of 118
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier SI_KCN_00098 · reported size 360,000 h-e design capacity · received load 389,068 h-e · reported treatment: PS · data year 2022. 1st of 118 records with reported size in the inventory of Slovenia; 15.2 % of the sum of those 118 records in h-e (sum of records, not national capacity); nearest inventoried plant at 2.3 km · 7 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 (as reported to the EEA: PS) · reported levels |
|---|---|
| Nitrogen removal | yes |
| Phosphorus removal | yes |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 46.0690, 14.6242 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
Documented milestones
- 2006 · Ljubljana’s central wastewater treatment plant was built in Zalog. Ayuntamiento de Liubliana
Other published data
| Mean annual volume treated reported in the 2022 cycle | 24,554,210 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 L03; it does not change the official data.
REGULATORY REFERENCES
Referencia normativa: Slovenia
Regulatory framework of Slovenia · 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: 389,068 p.e. of reported load; equivalent average load 389,456 p.e. with the reference profile of Slovenia (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 (81,704 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Uwwtp_dol Pri Ljubljani | 2.3 km | 4,000 | 2,131 | primary and secondary |
| Uwwtp_domžale-Kamnik | 5.5 km | 149,000 | 89,005 | primary, secondary and tertiary |
| Uwwtp_črnuče | 8.2 km | 8,000 | 13,338 | primary, secondary and tertiary |
| Uwwtp_rakova Jelša | 10.3 km | 300 | 650 | primary and secondary |
| Uwwtp_gameljne | 10.9 km | 1,500 | 1,953 | 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 UWWTP_LJUBLJANA (ZALOG) report?
Reported size: 360,000 h-e design capacity. Received load: 389,068 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 UWWTP_LJUBLJANA (ZALOG)?
Aguas SB simulator reference scenario for 389,068 p.e. of reported load: 11,453,921 kWh per year (29.4 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.