Worldwide wastewater treatment observatory · 
Austria
Aguas SB Observatory · public data to understand water
WWTP Hofsteig
Austria · official identifier ATTP_8-Hofsteig
271,600h-e design capacity (2022) · 12th of 634
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier ATTP_8-Hofsteig · reported size 271,600 h-e design capacity · received load 118,060 h-e · reported treatment: PST · data year 2022. 12th of 634 records with reported size in the inventory of Austria; 1.1 % of the sum of those 634 records in h-e (sum of records, not national capacity); nearest inventoried plant at 3.1 km · 3 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 | yes |
| Phosphorus removal | yes |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 47.4859, 9.6765 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
- 2026-07-01 · On 1 July 2026, work began at Hofsteig on recovering heat from treated wastewater for the Hard district heating network. Municipality of Hard
Other published data
| Mean annual volume treated reported in the 2022 cycle | 7,599,000 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: Austria
Regulatory framework of Austria · 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: 118,060 p.e. of reported load; equivalent average load 117,273 p.e. with the reference profile of Austria (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 (23,612 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Bregenz | 3.1 km | 75,000 | 37,600 | primary, secondary and tertiary |
| Leiblachtal | 6.9 km | 41,500 | 31,673 | primary, secondary and tertiary |
| Dornbirn | 7.1 km | 150,000 | 90,653 | primary, secondary and tertiary |
| Alberschwende | 11.0 km | 9,200 | 3,538 | primary, secondary and tertiary |
| Hohenems | 13.4 km | 170,000 | 78,371 | 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 Hofsteig report?
Reported size: 271,600 h-e design capacity. Received load: 118,060 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 Hofsteig?
Aguas SB simulator reference scenario for 118,060 p.e. of reported load: 3,780,027 kWh per year (32.2 kWh per p.e. of average load), with aeration as 55 % 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.