Worldwide wastewater treatment observatory · 
Norway
Aguas SB Observatory · public data to understand water
WWTP Høllen renseanlegg
Norway · official identifier NO4204.0671.01
16,000h-e design capacity (2022) · 80th of 340 (tied with 2 others)
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier NO4204.0671.01 · reported size 16,000 h-e design capacity · received load 16,823 h-e · reported treatment: PST · data year 2022. 80th of 340 records with reported size in the inventory of Norway (tied with 2 others); 0.21 % of the sum of those 340 records in h-e (sum of records, not national capacity); nearest inventoried plant at 11.5 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 | 58.0809, 7.8047 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: Norway
Regulatory framework of Norway. Individual applicability is not determined in this profile.
SCENARIO
Reference energy scenario for this load estimate · simulator engine
what this estimate is · Inputs: 16,823 p.e. of reported load; equivalent average load 13,124 p.e. with the reference profile of Norway (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 (3,365 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Bredalsholmen Renseanlegg | 11.5 km | 35,000 | 78,167 | primary, secondary and tertiary |
| Odderøya Renseanlegg | 12.8 km | 200,000 | 87,234 | primary, secondary and tertiary |
| Grønvika Renseanlegg - Mandal | 21.2 km | 21,000 | 14,533 | primary, secondary and tertiary |
| Birkeland Renseanlegg | 37.1 km | 4,000 | 3,179 | primary, secondary and tertiary |
| Fossbekk Renseanlegg | 37.7 km | 14,000 | 20,828 | 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 Høllen renseanlegg report?
Reported size: 16,000 h-e design capacity. Received load: 16,823 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 Høllen renseanlegg?
Aguas SB simulator reference scenario for 16,823 p.e. of reported load: 641,781 kWh per year (48.9 kWh per p.e. of average load), with aeration as 45 % 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.