Worldwide wastewater treatment observatory · 
Spain · Extremadura
Aguas SB Observatory · public data to understand water
WWTP CILLEROS
Cilleros · official identifier ES11100640001010E
3,700h-e design capacity (2022) · 1701st of 2,166 (tied with 3 others)
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier ES11100640001010E · reported size 3,700 h-e design capacity · received load 4,200 h-e · reported treatment: PS · data year 2022. 1701st of 2,166 records with reported size in the inventory of Spain (tied with 3 others); < 0.01 % of the sum of those 2,166 records in h-e (sum of records, not national capacity); nearest inventoried plant at 8.4 km · 3 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 | yes |
| Phosphorus removal | yes |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 40.1055, -6.7607 reported precision: reliable (<=11 m) what it means |
| Source and year | European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · dataset record |
REGULATORY REFERENCES
Referencia normativa: Spain
Regulatory framework of Spain · 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 |
|---|---|---|---|---|
| Acebo-Hoyos | 8.4 km | 4,500 | 4,500 | primary and secondary |
| Moraleja | 9.3 km | 12,960 | 14,100 | primary, secondary and tertiary |
| Perales del Puerto | 9.6 km | 3,900 | 2,400 | primary and secondary |
| San Martin de Trevejo | 12.1 km | 2,200 | 2,200 | primary and secondary |
| Valverde del Fresno-Eljas | 14.8 km | 9,585 | 9,200 | 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 CILLEROS report?
Reported size: 3,700 h-e design capacity. Received load: 4,200 h-e. 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.