Worldwide wastewater treatment observatory · 
Belgium
Aguas SB Observatory · public data to understand water
WWTP ROSIERES (LASNE)
Belgium · official identifier BERW2509101
112,500h-e design capacity (2022) · 17th of 397
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier BERW2509101 · reported size 112,500 h-e design capacity · received load 21,407 h-e · reported treatment: PS · data year 2022. 17th of 397 records with reported size in the inventory of Belgium; 1.1 % of the sum of those 397 records in h-e (sum of records, not national capacity); nearest inventoried plant at 5.5 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 | 50.7446, 4.5581 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: Belgium
Regulatory framework of Belgium · 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: 21,407 p.e. of reported load; equivalent average load 21,390 p.e. with the reference profile of Belgium (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 (7,685 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Basse Wavre (Dyle) | 5.7 km | 146,000 | 51,420 | primary and secondary |
| Grez-Doiceau · Berw2503702 | 6.7 km | 20,000 | 3,457 | primary and secondary |
| Huldenberg | 9.5 km | 31,500 | 29,800 | primary, secondary and tertiary |
| Tervuren | 10.0 km | 15,300 | 14,400 | primary, secondary and tertiary |
| Louvain-la-Neuve | 10.5 km | 13,000 | 5,321 | 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 ROSIERES (LASNE) report?
Reported size: 112,500 h-e design capacity. Received load: 21,407 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 ROSIERES (LASNE)?
Aguas SB simulator reference scenario for 21,407 p.e. of reported load: 1,163,390 kWh per year (54.4 kWh per p.e. of average load), with aeration as 44 % 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.