Worldwide wastewater treatment observatory · 
Netherlands
Aguas SB Observatory · public data to understand water
WWTP UWWTP LEIDEN-NOORD
Netherlands · official identifier NL13046
99,000h-e design capacity (2022) · 62nd of 315
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier NL13046 · reported size 99,000 h-e design capacity · received load 68,366 h-e · reported treatment: PST · data year 2022. 62nd of 315 records with reported size in the inventory of Netherlands; 0.46 % of the sum of those 315 records in h-e (sum of records, not national capacity); nearest inventoried plant at 4.4 km · 5 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 | 52.1744, 4.4940 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: Netherlands
Regulatory framework of Netherlands · 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: 68,366 p.e. of reported load; equivalent average load 68,285 p.e. with the reference profile of Netherlands (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 (18,049 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Uwwtp Leiden-Zuidwest | 4.4 km | 81,000 | 98,766 | primary, secondary and tertiary |
| Uwwtp Katwijk | 4.8 km | 144,000 | 132,616 | primary, secondary and tertiary |
| Uwwtp Noordwijk | 6.1 km | 71,100 | 60,000 | primary, secondary and tertiary |
| Uwwtp Nieuwe Wetering | 9.1 km | 22,500 | 19,950 | primary, secondary and tertiary |
| Uwwtp Lisse | 9.3 km | 31,500 | 21,650 | 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 UWWTP LEIDEN-NOORD report?
Reported size: 99,000 h-e design capacity. Received load: 68,366 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 UWWTP LEIDEN-NOORD?
Aguas SB simulator reference scenario for 68,366 p.e. of reported load: 2,785,289 kWh per year (40.8 kWh per p.e. of average load), with aeration as 52 % 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.