Worldwide wastewater treatment observatory · 
Portugal
Aguas SB Observatory · public data to understand water
WWTP Gaia Litoral
Portugal · official identifier PT18361583
300,000h-e design capacity (2022) · 9th of 527
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier PT18361583 · reported size 300,000 h-e design capacity · received load 300,000 h-e · reported treatment: PS · data year 2022. 9th of 527 records with reported size in the inventory of Portugal; 1.7 % of the sum of those 527 records in h-e (sum of records, not national capacity); nearest inventoried plant at 4.0 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 (as reported to the EEA: PS) · reported levels |
|---|---|
| Nitrogen removal | not reported |
| Phosphorus removal | not reported |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 41.1119, -8.6542 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
- 2003-05 · The Gaia Litoral plant entered service in May 2003, according to the technical study held by Porto Polytechnic Institute. Porto Polytechnic Institute
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 L04; it does not change the official data.
REGULATORY REFERENCES
Referencia normativa: Portugal
Regulatory framework of Portugal · 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: 300,000 p.e. of reported load; equivalent average load 300,000 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 (60,000 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Sobreiras | 4.0 km | 200,000 | 200,000 | primary, secondary and tertiary |
| Areinho | 6.2 km | 30,000 | 30,000 | primary, secondary and tertiary |
| Febros | 7.0 km | 80,000 | 80,000 | primary and secondary |
| Freixo | 7.5 km | 170,000 | 170,000 | primary, secondary and tertiary |
| Gramido | 8.2 km | 55,000 | 55,000 | 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 Gaia Litoral report?
Reported size: 300,000 h-e design capacity. Received load: 300,000 h-e. Units are retained without conversion.
What treatment is reported?
Treatment PS. Nitrogen, phosphorus and UV are shown only when explicitly reported.
How much energy would a reference plant use with the load of Gaia Litoral?
Aguas SB simulator reference scenario for 300,000 p.e. of reported load: 8,890,377 kWh per year (29.6 kWh per p.e. of average load), with aeration as 62 % 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.