Average nitrate concentration in freshwater in Slovenia
Slovenia: Average nitrate concentration in freshwater was 18.2 milligrams per liter in 2021. ▼ Falling
Latest (2021)
18.2 milligrams per liter
Change on year
up 15.7%
World rank
15th
of 34 countries
All-time high
23.77 milligrams per liter
in 1994
All-time low
15.73 milligrams per liter
in 2020
Years of data
30
1992–2021
Average nitrate concentration in freshwater in Slovenia, 1992–2021
Source: European Environment Agency (2023) – with minor processing by Our World in Data. Measured in milligrams per liter.
Analysis
Slovenia recorded 18.2 milligrams per liter for average nitrate concentration in freshwater in 2021.
Compared with earlier readings it is up 15.7% on the previous year and up 0.5% over ten years.
Over the whole period, average nitrate concentration in freshwater in Slovenia peaked at 23.77 milligrams per liter in 1994 and was at its lowest, 15.73 milligrams per liter, in 2020.
That places Slovenia 15th out of 34 countries with data for 2021, putting it in the middle of the range.
The long-run direction has been consistently falling across the 30 years of available data.
Average nitrate concentration in freshwater in Slovenia, year by year
| Year | milligrams per liter | Change |
|---|---|---|
| 1992 | 20.44 milligrams per liter | — |
| 1993 | 20.44 milligrams per liter | +0.0% |
| 1994 | 23.77 milligrams per liter | +16.3% |
| 1995 | 23.77 milligrams per liter | +0.0% |
| 1996 | 22.14 milligrams per liter | -6.9% |
| 1997 | 21.07 milligrams per liter | -4.8% |
| 1998 | 22.3 milligrams per liter | +5.8% |
| 1999 | 21.14 milligrams per liter | -5.2% |
| 2000 | 19.34 milligrams per liter | -8.5% |
| 2001 | 21.44 milligrams per liter | +10.8% |
| 2002 | 22.87 milligrams per liter | +6.7% |
| 2003 | 20.59 milligrams per liter | -10.0% |
| 2004 | 22.4 milligrams per liter | +8.8% |
| 2005 | 23.6 milligrams per liter | +5.3% |
| 2006 | 21.64 milligrams per liter | -8.3% |
| 2007 | 17.9 milligrams per liter | -17.3% |
| 2008 | 18.72 milligrams per liter | +4.6% |
| 2009 | 19.14 milligrams per liter | +2.2% |
| 2010 | 18.02 milligrams per liter | -5.8% |
| 2011 | 18.12 milligrams per liter | +0.5% |
| 2012 | 17.05 milligrams per liter | -5.9% |
| 2013 | 19.61 milligrams per liter | +15.0% |
| 2014 | 18.59 milligrams per liter | -5.2% |
| 2015 | 18.25 milligrams per liter | -1.8% |
| 2016 | 18.25 milligrams per liter | +0.0% |
| 2017 | 18.28 milligrams per liter | +0.2% |
| 2018 | 18.42 milligrams per liter | +0.8% |
| 2019 | 16.13 milligrams per liter | -12.4% |
| 2020 | 15.73 milligrams per liter | -2.5% |
| 2021 | 18.2 milligrams per liter | +15.7% |
Slovenia compared with similar countries
- Slovenia's 18.2 milligrams per liter is above the median for Europe & Central Asia, which is 15.9 milligrams per liter, 1.1× the median. (34 countries reporting)
- Slovenia's 18.2 milligrams per liter is above the median for high income countries, which is 16.12 milligrams per liter, 1.1× the median. (29 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 21.88 milligrams per liter | 20.44 milligrams per liter | 23.77 milligrams per liter | 8 |
| 2000s | 20.76 milligrams per liter | 17.9 milligrams per liter | 23.6 milligrams per liter | 10 |
| 2010s | 18.07 milligrams per liter | 16.13 milligrams per liter | 19.61 milligrams per liter | 10 |
| 2020s | 16.97 milligrams per liter | 15.73 milligrams per liter | 18.2 milligrams per liter | 2 |
Countries ranked near Slovenia
More environment data for Slovenia
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.523 °C (2025)
- Temperature change 2.22 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 3.96 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate -0.9661 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Building (Energy) (Mt CO2e), annual 0.078 % change on previous year (2024)
Frequently asked questions
- What is average nitrate concentration in freshwater in Slovenia?
- Average nitrate concentration in freshwater in Slovenia was 18.2 milligrams per liter in 2021, according to European Environment Agency (2023) – with minor processing by Our World in Data.
- What is the highest average nitrate concentration in freshwater recorded in Slovenia?
- The highest recorded value was 23.77 milligrams per liter in 1994.
- What is the lowest average nitrate concentration in freshwater recorded in Slovenia?
- The lowest recorded value was 15.73 milligrams per liter in 2020.
- How does Slovenia rank for average nitrate concentration in freshwater?
- Slovenia ranks 15th out of 34 countries with data for 2021.
- Is average nitrate concentration in freshwater rising or falling in Slovenia?
- Over the last ten years it is up 0.5%. The long-run trend across the full record is falling.
- Where does this Slovenia data come from?
- The figures come from European Environment Agency (2023) – with minor processing by Our World in Data, published as part of Average nitrate concentration in freshwater. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 30 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Average annual concentration of nitrate in groundwater.