Worldwide wastewater treatment observatory · 
Switzerland
Aguas SB Observatory · public data to understand water
WWTP THONEX/VILLETTE
Switzerland · official identifier CH_WWTP_664000
50,000h-e design capacity (2022) · 76th of 705 (tied with 3 others)
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier CH_WWTP_664000 · reported size 50,000 h-e design capacity · received load 43,551 h-e · reported treatment: PS · data year 2022. 76th of 705 records with reported size in the inventory of Switzerland (tied with 3 others); 0.30 % of the sum of those 705 records in h-e (sum of records, not national capacity); nearest inventoried plant at 7.5 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 (as reported to the EEA: PS) · reported levels |
|---|---|
| Nitrogen removal | not reported |
| Phosphorus removal | not reported |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 46.1795, 6.1845 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: Switzerland
Regulatory framework of Switzerland. Individual applicability is not determined in this profile.
SCENARIO
Reference energy scenario for this load estimate · simulator engine
what this estimate is · Inputs: 43,551 p.e. of reported load; equivalent average load 49,168 p.e. with the reference profile of Switzerland (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 (14,677 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Vernier/Aire | 7.5 km | 600,000 | 536,179 | primary and secondary |
| Vernier-Ouest(Givaudan) | 8.6 km | 97,676 | 75,679 | primary and secondary |
| Satigny/Bois-de-Bay | 11.3 km | 130,000 | 112,703 | primary and secondary |
| Dardagny(Firmenich1) | 13.6 km | 47,000 | 28,244 | primary and secondary |
| Commugny | 16.4 km | 30,000 | 18,328 | primary, secondary and tertiary |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP THONEX/VILLETTE report?
Reported size: 50,000 h-e design capacity. Received load: 43,551 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 THONEX/VILLETTE?
Aguas SB simulator reference scenario for 43,551 p.e. of reported load: 2,165,711 kWh per year (44.0 kWh per p.e. of average load), with aeration as 49 % 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.