Worldwide wastewater treatment observatory · 
France
Aguas SB Observatory · public data to understand water
WWTP DIAG-DINAN LANVALLAY LE MARAIS
France · official identifier FR0422118S0002
52,000h-e design capacity (2022) · 331st of 4,051 (tied with 5 others)
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier FR0422118S0002 · reported size 52,000 h-e design capacity · received load 53,277 h-e · reported treatment: PST · data year 2022. 331st of 4,051 records with reported size in the inventory of France (tied with 5 others); 0.05 % of the sum of those 4,051 records in h-e (sum of records, not national capacity); nearest inventoried plant at 4.1 km · 4 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 | 48.4628, -2.0272 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: France
Regulatory framework of France · Directive (EU) 2024/3019: reported-capacity band 10,000 to 149,999 p.e.; 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: 53,277 p.e. of reported load; equivalent average load 53,303 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 (7,725 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Diag-Saint-Samson-Sur-Rance la Hisse | 4.1 km | 2,700 | 1,638 | primary, secondary and tertiary |
| Diag-Plouer-Sur-Rance la Minotais | 7.2 km | 3,000 | 2,332 | primary, secondary and tertiary |
| Diag-Pleslin-Trigavou Ville des Champs | 7.8 km | 3,400 | 3,267 | primary, secondary and tertiary |
| Diag-Pleudihen-Sur-Rance la Fosse Even | 8.6 km | 2,200 | 2,848 | primary, secondary and tertiary |
| Miniac-Morvan | 11.4 km | 4,000 | 1,280 | 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 DIAG-DINAN LANVALLAY LE MARAIS report?
Reported size: 52,000 h-e design capacity. Received load: 53,277 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 DIAG-DINAN LANVALLAY LE MARAIS?
Aguas SB simulator reference scenario for 53,277 p.e. of reported load: 1,897,844 kWh per year (35.6 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.