Worldwide wastewater treatment observatory · 
Greece
Aguas SB Observatory · public data to understand water
WWTP METAMORPHOSI
Greece · official identifier EL300026013
500,000h-e design capacity (2022) · 3rd of 273
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier EL300026013 · reported size 500,000 h-e design capacity · received load 450,000 h-e · reported treatment: PST · data year 2022. 3rd of 273 records with reported size in the inventory of Greece; 3.5 % of the sum of those 273 records in h-e (sum of records, not national capacity); nearest inventoried plant at 18.3 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 | not reported |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 38.0779, 23.7738 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
- 1986-03 · The Metamorfosi wastewater treatment plant entered full service in March 1986. Its first phase had been operating since July 1984. Municipality of Metamorfosi
Other published data
| Mean annual volume treated reported in the 2022 cycle | 8,695,030 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: Greece
Regulatory framework of Greece · 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: 450,000 p.e. of reported load; equivalent average load 450,023 p.e. with the reference profile of Greece (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 (79,650 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Thriassio | 18.3 km | 117,000 | 46,900 | primary, secondary and tertiary |
| Psyttalia | 22.7 km | 5,630,000 | 5,219,579 | primary, secondary and tertiary |
| Markopoulo | 27.7 km | 40,000 | 6,630 | primary, secondary and tertiary |
| Inofyta-Schimatari | 30.4 km | 20,000 | 8,000 | primary, secondary and tertiary |
| Megara | 36.1 km | 43,330 | 25,293 | 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 METAMORPHOSI report?
Reported size: 500,000 h-e design capacity. Received load: 450,000 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 METAMORPHOSI?
Aguas SB simulator reference scenario for 450,000 p.e. of reported load: 12,585,188 kWh per year (28.0 kWh per p.e. of average load), with aeration as 65 % 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.