Worldwide wastewater treatment observatory · 
Switzerland
Aguas SB Observatory · public data to understand water
WWTP Davos (Wiesen)
Switzerland · official identifier CH_WWTP_385105
1,750h-e design capacity (2022) · 473rd of 705 (tied with 2 others)
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier CH_WWTP_385105 · reported size 1,750 h-e design capacity · received load 977 h-e · reported treatment: PST · data year 2022. 473rd of 705 records with reported size in the inventory of Switzerland (tied with 2 others); 0.01 % of the sum of those 705 records in h-e (sum of records, not national capacity); nearest inventoried plant at 4.0 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 + tertiary (more stringent) (as reported to the EEA: PST) · reported levels |
|---|---|
| Nitrogen removal | not reported |
| Phosphorus removal | yes |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 46.6990, 9.7166 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: 977 p.e. of reported load; equivalent average load 1,102 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 (329 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Davos (Monstein) | 4.0 km | 625 | 493 | primary, secondary and tertiary |
| Davos (Glaris) | 6.5 km | 1,500 | 626 | primary, secondary and tertiary |
| Albula/Alvra (Alvaneu) | 6.7 km | 2,800 | 1,719 | primary, secondary and tertiary |
| Bergün Filisur | 7.8 km | 3,333 | 727 | primary, secondary and tertiary |
| Davos (Gadenstatt) | 8.5 km | 44,000 | 20,169 | 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 Davos (Wiesen) report?
Reported size: 1,750 h-e design capacity. Received load: 977 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 Davos (Wiesen)?
Aguas SB simulator reference scenario for 977 p.e. of reported load: 60,401 kWh per year (54.8 kWh per p.e. of average load), with aeration as 60 % 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.