Worldwide wastewater treatment observatory · 
Latvia
Aguas SB Observatory · public data to understand water
WWTP Daugavpils ūdens
Latvia · official identifier LV800178
120,000h-e design capacity (2022) · 2nd of 79
European Environment Agency — Waterbase-UWWTD, data call 2023 (versión final pública) · official identifier LV800178 · reported size 120,000 h-e design capacity · received load 71,948 h-e · reported treatment: PST · data year 2022. 2nd of 79 records with reported size in the inventory of Latvia; 5.7 % of the sum of those 79 records in h-e (sum of records, not national capacity); nearest inventoried plant at 16.8 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 | 55.8765, 26.5050 precision reported by the source: level 1 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
- 2025-05-13 · On 13 May 2025, the agreement to upgrade the wastewater treatment facilities in Daugavpils was signed. City of Daugavpils
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 L07; it does not change the official data.
REGULATORY REFERENCES
Referencia normativa: Latvia
Regulatory framework of Latvia · 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: 71,948 p.e. of reported load; equivalent average load 71,820 p.e. with the reference profile of Latvia (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 (11,871 m³/day of reference), not measured or available for reclamation.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | Capacity (h-e) | Load 2022 | Treatment |
|---|---|---|---|---|
| Pu ""ornaments"" | 16.8 km | 4,170 | 1,377 | primary and secondary |
| Krāslavas Pilsētas Nai ""sārtloki"" | 39.2 km | 12,864 | 4,829 | primary, secondary and tertiary |
| Sia ""preiļu Saimnieks"" Robežu Iela | 48.0 km | 8,286 | 7,830 | primary and secondary |
| Pu ""līvānu Dzīvokļu Komunālās Saimniecības Pārvalde"" | 59.5 km | 10,000 | 4,930 | primary and secondary |
| Maltas Dzksu | 66.3 km | 1,200 | 487 | primary and secondary |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP Daugavpils ūdens report?
Reported size: 120,000 h-e design capacity. Received load: 71,948 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 Daugavpils ūdens?
Aguas SB simulator reference scenario for 71,948 p.e. of reported load: 2,441,068 kWh per year (34.0 kWh per p.e. of average load), with aeration as 58 % 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.