Biochemical oxygen demand in rivers in Bulgaria
Bulgaria: Biochemical oxygen demand in rivers was 2.48 Milligrams per litre in 2023. ▼ Falling
Biochemical oxygen demand in rivers in Bulgaria, 2007–2023
Source: Eurostat. Measured in Milligrams per litre.
Analysis
Bulgaria recorded 2.48 Milligrams per litre for biochemical oxygen demand in rivers in 2023.
The figure is up 0.4% on the previous year and down 10.8% over ten years.
Over the whole period, biochemical oxygen demand in rivers in Bulgaria peaked at 3.37 Milligrams per litre in 2007 and was at its lowest, 2.47 Milligrams per litre, in 2021.
Bulgaria ranks 7th of 21 countries on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 17 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 3.29 Milligrams per litre | 3.2 Milligrams per litre | 3.37 Milligrams per litre | 3 |
| 2010s | 2.71 Milligrams per litre | 2.48 Milligrams per litre | 3.09 Milligrams per litre | 10 |
| 2020s | 2.48 Milligrams per litre | 2.47 Milligrams per litre | 2.48 Milligrams per litre | 4 |
Countries ranked near Bulgaria
More reference data data for Bulgaria
- Spring temperature anomalies 0.2116 °C (2026)
- Summer temperature anomalies 1.08 °C (2026)
- Temperature anomalies by month 1.39 °C (2026)
- Universal right to vote in practice 2 (2025)
- Autumn temperature anomalies 1.44 °C (2025)
- Winter temperature anomalies 1.98 °C (2025)
- Consumer price index 162.5 2010 = 100 (2025)
- Universal right to vote 2 (2025)
- Competitive elections 1 (2025)
- Men's universal right to vote 1 (2025)
Frequently asked questions
- What is biochemical oxygen demand in rivers in Bulgaria?
- Biochemical oxygen demand in rivers in Bulgaria was 2.48 Milligrams per litre in 2023, according to Eurostat.
- What is the highest biochemical oxygen demand in rivers recorded in Bulgaria?
- The highest recorded value was 3.37 Milligrams per litre in 2007.
- What is the lowest biochemical oxygen demand in rivers recorded in Bulgaria?
- The lowest recorded value was 2.47 Milligrams per litre in 2021.
- How does Bulgaria rank for biochemical oxygen demand in rivers?
- Bulgaria ranks 7th out of 21 countries with data for 2023.
- Is biochemical oxygen demand in rivers rising or falling in Bulgaria?
- Over the last ten years it is down 10.8%. The long-run trend across the full record is falling.
- Where does this Bulgaria data come from?
- The figures come from Eurostat, published as part of Biochemical oxygen demand in rivers. Statizoid updates them automatically from the source API.
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CSV · JSON — 17 observations, free to reuse under CC BY 4.0 (Eurostat).