Worldwide wastewater treatment observatory · 
Finland
Aguas SB Observatory · public data to understand water
WWTP TP (0) of Mariehamn
Finland · official identifier FIJVP_O000000000000
30,000h-e design capacity (2022) · 54th of 145
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier FIJVP_O000000000000 · reported size 30,000 h-e design capacity · received load 32,500 h-e · reported treatment: PST · data year 2022. 54th of 145 records with reported size in the inventory of Finland; 0.41 % of the sum of those 145 records in h-e (sum of records, not national capacity); nearest inventoried plant at 112.6 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 | 60.0910, 19.9290 precision reported by the source: level 1 what it means |
| Source and year | European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · dataset record |
REGULATORY REFERENCES
Referencia normativa: Finland
Regulatory framework of Finland · 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: 32,500 p.e. of reported load; equivalent average load 32,516 p.e. with the reference profile of Finland (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 (5,688 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Tp (904) Of Laitilan Kt. | 112.6 km | 59,000 | 48,900 | primary, secondary and tertiary |
| Tp (1900015537) Of Turun Kt. | 133.4 km | 315,000 | 439,000 | primary, secondary and tertiary |
| Tp (579) Of Paraisten Kt. | 133.5 km | 12,000 | 15,500 | primary, secondary and tertiary |
| Tp (1901036878) Of Eurajoen Kk. | 141.7 km | 40,000 | 37,000 | primary, secondary and tertiary |
| Tp (44) Of Euran Kk. | 166.6 km | 36,000 | 38,700 | 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 TP (0) of Mariehamn report?
Reported size: 30,000 h-e design capacity. Received load: 32,500 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 TP (0) of Mariehamn?
Aguas SB simulator reference scenario for 32,500 p.e. of reported load: 1,338,091 kWh per year (41.2 kWh per p.e. of average load), with aeration as 57 % 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.