Worldwide wastewater treatment observatory · France

Aguas SB Observatory · public data to understand water

WWTP DOUAI

France · official identifier FR011031500000

165,000h-e design capacity (2022) · 80th of 4,051

European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier FR011031500000 · reported size 165,000 h-e design capacity · received load 120,342 h-e · reported treatment: PST · data year 2022. 80th 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 2.9 km · 11 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

165,000h-e design capacity

120,342h-e received load (2022)

73 %reported load/capacity ratio (not hydraulic utilisation)

80th of 4,051by reported size among the 4,051 records with a size in the inventory · 0.17 % of the sum of those records (sum of records, not national capacity) · the largest plants in the country · how it is calculated

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	50.3931, 3.1057 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

1992 · The national register dates the commissioning of this facility to 1992. 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 L06; 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

3,640,335reference kWh per year for this load

30.2kWh per h-e (average load) per year

546,050€ per year at 0.15 €/kWh

60 %share of energy used for aeration

what this estimate is · Inputs: 120,342 p.e. of reported load; equivalent average load 120,405 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

6.4estimated hm³ of treated water per year

tertiary treatment reporteda starting point for reclamation

what this estimate is · Volume estimated from the reported load (17,450 m³/day of reference), not measured or available for reclamation.

LOCATION

France: this plant on the map

this plant on the map · regional directory.

NEARBY PLANTS

Nearby wastewater treatment plants

Plant	Distance	Capacity (h-e)	Load 2022	Treatment
Sin-Le-Noble	2.9 km	23,000	20,181	primary, secondary and tertiary
Auby	4.8 km	24,000	10,761	primary, secondary and tertiary
Lallaing-Flines	4.8 km	20,049	12,708	primary, secondary and tertiary
Courcelles les Lens	6.2 km	18,000	21,407	primary, secondary and tertiary
Flines-Lez-Raches	6.3 km	10,001	9,546	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 DOUAI report?

Reported size: 165,000 h-e design capacity. Received load: 120,342 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 DOUAI?

Aguas SB simulator reference scenario for 120,342 p.e. of reported load: 3,640,335 kWh per year (30.2 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.