Worldwide wastewater treatment observatory · 
Portugal
Aguas SB Observatory · public data to understand water
WWTP Fontainhas
Portugal · official identifier PT10032598
6,750h-e design capacity (2022) · 283rd of 527 (tied with 1 others)
Facility inactive according to reported data. Historical profile: excluded from current aggregates.
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier PT10032598 · reported size 6,750 h-e design capacity · reported treatment: PS · data year 2022. 283rd of 527 records with reported size in the inventory of Portugal (tied with 1 others); 0.04 % of the sum of those 527 records in h-e (sum of records, not national capacity); nearest inventoried plant at 3.1 km · 1 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 | inactive according to reported data |
| Reported coordinates | 38.1660, -8.5533 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 1,000 to 9,999 p.e.; obligations are set by agglomeration load, not by the capacity of this plant. Individual applicability is not determined in this profile.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Grandola | 3.1 km | 9,450 | 9,400 | primary and secondary |
| Carvalhal | 23.0 km | 3,045 | 2,900 | primary, secondary and tertiary |
| Alcacer do Sal Norte (Nova ETAR) | 25.8 km | 10,700 | 10,700 | primary and secondary |
| Alvalade do Sado | 28.9 km | 2,350 | 2,350 | primary and secondary |
| Comporta | 30.2 km | 2,500 | 2,500 | 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 Fontainhas report?
Reported size: 6,750 h-e design capacity. Units are retained without conversion.
What treatment is reported?
Treatment PS. Nitrogen, phosphorus and UV are shown only when explicitly reported.
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.