Worldwide wastewater treatment observatory · 
Croatia
Aguas SB Observatory · public data to understand water
WWTP Varaždin
Croatia · official identifier HRUWWTP_0005035_001
140,000h-e design capacity (2022) · 3rd of 115
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier HRUWWTP_0005035_001 · reported size 140,000 h-e design capacity · received load 101,795 h-e · reported treatment: PS · data year 2022. 3rd of 115 records with reported size in the inventory of Croatia; 3.2 % of the sum of those 115 records in h-e (sum of records, not national capacity); nearest inventoried plant at 3.0 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 | not reported |
| Phosphorus removal | not reported |
| UV disinfection | not reported |
| Status | active |
| Reported coordinates | 46.3098, 16.3964 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
- 2025-05-06 · On 6 May 2025, the City of Varaždin reported that the first phase of rebuilding and expanding the Motičnjak treatment plant was underway. City of Varaždin
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: Croatia
Regulatory framework of Croatia · 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: 101,795 p.e. of reported load; equivalent average load 101,795 p.e. with the reference profile of Croatia (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 (20,359 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Novo Selo Na Dravi | 3.0 km | 5,000 | 2,936 | primary and secondary |
| Čakovec | 9.4 km | 75,000 | 54,337 | primary, secondary and tertiary |
| Podbrest | 9.7 km | not reported | 4,098 | not reported |
| Varaždinske Toplice | 11.6 km | 6,500 | 4,633 | primary and secondary |
| Novi Marof | 16.5 km | not reported | 2,105 | not reported |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP Varaždin report?
Reported size: 140,000 h-e design capacity. Received load: 101,795 h-e. Units are retained without conversion.
What treatment is reported?
Treatment PS. Nitrogen, phosphorus and UV are shown only when explicitly reported.
How much energy would a reference plant use with the load of Varaždin?
Aguas SB simulator reference scenario for 101,795 p.e. of reported load: 3,461,096 kWh per year (34.0 kWh per p.e. of average load), with aeration as 56 % 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.