Average nitrate concentration in freshwater in Portugal
Portugal: Average nitrate concentration in freshwater was 16.12 milligrams per litre in 2021. ▼ Falling
Average nitrate concentration in freshwater in Portugal, 1992–2021
Source: European Environment Agency (2023) – with minor processing by Our World in Data. Measured in milligrams per litre.
Analysis
The most recent figure for average nitrate concentration in freshwater in Portugal is 16.12 milligrams per litre, measured in 2021.
That represents a change of up 4.7% on the previous year and down 1.0% over ten years.
Over the whole period, average nitrate concentration in freshwater in Portugal peaked at 58.77 milligrams per litre in 1996 and was at its lowest, 13.53 milligrams per litre, in 2014.
That places Portugal 17th 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.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 33.18 milligrams per litre | 21.33 milligrams per litre | 58.77 milligrams per litre | 8 |
| 2000s | 21.26 milligrams per litre | 16.25 milligrams per litre | 27.57 milligrams per litre | 10 |
| 2010s | 15.44 milligrams per litre | 13.53 milligrams per litre | 16.98 milligrams per litre | 10 |
| 2020s | 15.76 milligrams per litre | 15.4 milligrams per litre | 16.12 milligrams per litre | 2 |
Countries ranked near Portugal
More environment data for Portugal
- Total greenhouse gas emissions excluding LULUCF 53.17 Mt CO2e (2024)
- Total greenhouse gas emissions excluding LULUCF per capita 4.97 t CO2e/capita (2024)
- Methane (CH4) emissions from Agriculture 4.92 Mt CO2e (2024)
- Methane (CH4) emissions from Building (Energy) 0.296 Mt CO2e (2024)
- Methane (CH4) emissions from Fugitive Emissions (Energy) 0.9579 Mt CO2e (2024)
- Methane (CH4) emissions from Industrial Combustion (Energy) 0.0441 Mt CO2e (2024)
- Methane (CH4) emissions (total) excluding LULUCF 11.4 Mt CO2e (2024)
- Methane (CH4) emissions from Power Industry (Energy) 0.0464 Mt CO2e (2024)
- Methane (CH4) emissions from Transport (Energy) 0.0253 Mt CO2e (2024)
- Methane (CH4) emissions from Waste 5.1 Mt CO2e (2024)
Frequently asked questions
- What is average nitrate concentration in freshwater in Portugal?
- Average nitrate concentration in freshwater in Portugal was 16.12 milligrams per litre 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 Portugal?
- The highest recorded value was 58.77 milligrams per litre in 1996.
- What is the lowest average nitrate concentration in freshwater recorded in Portugal?
- The lowest recorded value was 13.53 milligrams per litre in 2014.
- How does Portugal rank for average nitrate concentration in freshwater?
- Portugal ranks 17th out of 34 countries with data for 2021.
- Is average nitrate concentration in freshwater rising or falling in Portugal?
- Over the last ten years it is down 1.0%. The long-run trend across the full record is falling.
- Where does this Portugal 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.