Worldwide wastewater treatment observatory · 
Portugal
Aguas SB Observatory · public data to understand water
WWTP Mafra
Portugal · official identifier PT18014719
14,518h-e design capacity (2022) · 178th of 527
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier PT18014719 · reported size 14,518 h-e design capacity · received load 7,000 h-e · reported treatment: PST · data year 2022. 178th of 527 records with reported size in the inventory of Portugal; 0.08 % of the sum of those 527 records in h-e (sum of records, not national capacity); nearest inventoried plant at 5.4 km · 6 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 | not reported |
| UV disinfection | yes |
| Status | active |
| Reported coordinates | 38.9371, -9.3404 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: Portugal
Regulatory framework of Portugal · 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: 7,000 p.e. of reported load; equivalent average load 7,000 p.e. with the reference profile of Portugal (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 (1,400 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Foz do Lizandro | 5.4 km | 28,125 | 23,500 | primary and secondary |
| Malveira | 5.9 km | 37,746 | 11,300 | primary, secondary and tertiary |
| S. Joao das Lampas | 8.1 km | 7,500 | 6,300 | primary and secondary |
| Ericeira | 8.9 km | 40,000 | 25,300 | primary, secondary and tertiary |
| Montelavar | 9.1 km | 18,000 | 8,500 | primary and secondary |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP Mafra report?
Reported size: 14,518 h-e design capacity. Received load: 7,000 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 Mafra?
Aguas SB simulator reference scenario for 7,000 p.e. of reported load: 315,940 kWh per year (45.1 kWh per p.e. of average load), with aeration as 48 % 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.