Worldwide wastewater treatment observatory · 
Portugal
Aguas SB Observatory · public data to understand water
WWTP Obidos
Portugal · official identifier PT12057925
3,300h-e design capacity (2022) · 410th of 527 (tied with 3 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 PT12057925 · reported size 3,300 h-e design capacity · reported treatment: PS · data year 2022. 410th of 527 records with reported size in the inventory of Portugal (tied with 3 others); 0.02 % of the sum of those 527 records in h-e (sum of records, not national capacity); nearest inventoried plant at 1.6 km · 7 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 | 39.3620, -9.1631 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 |
|---|---|---|---|---|
| Gaeiras | 1.6 km | 2,534 | 2,000 | primary, secondary and tertiary |
| Caldas da Rainha | 4.6 km | 38,000 | 36,000 | primary and secondary |
| Charneca | 4.8 km | 29,436 | 31,000 | primary and secondary |
| Casalito | 6.7 km | 9,928 | 9,000 | primary, secondary and tertiary |
| Vidais | 7.9 km | 2,250 | 2,200 | 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 Obidos report?
Reported size: 3,300 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.