Worldwide wastewater treatment observatory · 
France
Aguas SB Observatory · public data to understand water
WWTP LORIENT KÉROLAY
France · official identifier FR0456121S0005
166,667h-e design capacity (2022) · 79th of 4,051
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier FR0456121S0005 · reported size 166,667 h-e design capacity · received load 99,021 h-e · reported treatment: PST · data year 2022. 79th of 4,051 records with reported size in the inventory of France; 0.17 % of the sum of those 4,051 records in h-e (sum of records, not national capacity); nearest inventoried plant at 5.1 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 + tertiary (more stringent) (as reported to the EEA: PST) · reported levels |
|---|---|
| Nitrogen removal | yes |
| Phosphorus removal | yes |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 47.7323, -3.3829 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
- 1999 · The national register dates the commissioning of this facility to 1999. French Ministry responsible for the ecological transition
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 L05; it does not change the official data.
REGULATORY REFERENCES
Referencia normativa: France
Regulatory framework of France · 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: 99,021 p.e. of reported load; equivalent average load 99,070 p.e. with the reference profile of France (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 (14,358 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Riantec | 5.1 km | 18,000 | 10,165 | primary, secondary and tertiary |
| Queven Le Radenec | 5.6 km | 30,000 | 16,730 | primary, secondary and tertiary |
| Ploemeur Kervernois | 6.1 km | 28,333 | 16,691 | primary, secondary and tertiary |
| Gavres | 6.1 km | 3,320 | 1,295 | primary and secondary |
| Lanester Zi de Kerpont | 6.3 km | 55,000 | 76,403 | primary, secondary and tertiary |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP LORIENT KÉROLAY report?
Reported size: 166,667 h-e design capacity. Received load: 99,021 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 LORIENT KÉROLAY?
Aguas SB simulator reference scenario for 99,021 p.e. of reported load: 3,115,256 kWh per year (31.4 kWh per p.e. of average load), with aeration as 60 % 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.