Biochemical oxygen demand in rivers in Bulgaria
Bulgaria: Biochemical oxygen demand in rivers was 2.48 Milligrams per litre in 2023. ▼ Falling
Latest (2023)
2.48 Milligrams per litre
Change on year
up 0.4%
World rank
7th
of 28 countries
All-time high
3.37 Milligrams per litre
in 2007
All-time low
2.47 Milligrams per litre
in 2021
Years of data
17
2007–2023
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 28 countries on this measure, in the top quarter.
The long-run direction has been consistently falling across the 17 years of available data.
Biochemical oxygen demand in rivers in Bulgaria, year by year
| Year | Milligrams per litre | Change |
|---|---|---|
| 2007 | 3.37 Milligrams per litre | — |
| 2008 | 3.29 Milligrams per litre | -2.4% |
| 2009 | 3.2 Milligrams per litre | -2.7% |
| 2010 | 3.09 Milligrams per litre | -3.4% |
| 2011 | 2.99 Milligrams per litre | -3.2% |
| 2012 | 2.88 Milligrams per litre | -3.7% |
| 2013 | 2.78 Milligrams per litre | -3.5% |
| 2014 | 2.7 Milligrams per litre | -2.9% |
| 2015 | 2.63 Milligrams per litre | -2.6% |
| 2016 | 2.57 Milligrams per litre | -2.3% |
| 2017 | 2.53 Milligrams per litre | -1.6% |
| 2018 | 2.5 Milligrams per litre | -1.2% |
| 2019 | 2.48 Milligrams per litre | -0.8% |
| 2020 | 2.48 Milligrams per litre | +0.0% |
| 2021 | 2.47 Milligrams per litre | -0.4% |
| 2022 | 2.47 Milligrams per litre | +0.0% |
| 2023 | 2.48 Milligrams per litre | +0.4% |
Bulgaria compared with similar countries
- Bulgaria's 2.48 Milligrams per litre is above the median for Europe & Central Asia, which is 1.93 Milligrams per litre, 1.3× the median. (20 countries reporting)
- Bulgaria's 2.48 Milligrams per litre is above the median for high income countries, which is 1.93 Milligrams per litre, 1.3× the median. (19 countries reporting)
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
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.3067 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.2728 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 1.73 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.2506 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 1.73 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 1.03 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.608 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 1.02 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 7.74 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 1.36 (2050)
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 28 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.
Download this data
CSV · JSON — 17 observations, free to reuse under CC BY 4.0 (Eurostat).