Greece vs Spain: Average nitrate concentration in freshwater

Greece
115.65 milligrams per liter
in 2021
Spain
36.93 milligrams per liter
in 2021
Greece rank
1st
Spain rank
2nd

Average nitrate concentration in freshwater over time

  • Greece
  • Spain
050100150199320072021

How they compare

Greece currently reports 115.65 milligrams per liter against 36.93 milligrams per liter in Spain, a difference of 78.72 milligrams per liter.

That makes Greece's figure about 3.1 times Spain's.

The two have swapped places 2 times across 14 shared years of data; in 1999 it was Greece ahead.

Greece ranks 1st and Spain ranks 2nd of 34 countries.

Across the 4 decades both report, Greece averaged higher in 3 and Spain in 1.

Head to head by decade

Decade Greece Spain Difference Ahead
1990s 15.5 milligrams per liter 4 milligrams per liter 11.5 milligrams per liter Greece
2000s 17.86 milligrams per liter 25.48 milligrams per liter 7.62 milligrams per liter Spain
2010s 127.68 milligrams per liter 34.85 milligrams per liter 92.83 milligrams per liter Greece
2020s 115.22 milligrams per liter 36.81 milligrams per liter 78.41 milligrams per liter Greece

Averages of every year both report within each decade.

Frequently asked questions

Which has higher average nitrate concentration in freshwater, Greece or Spain?
Greece, at 115.65 milligrams per liter against 36.93 milligrams per liter in Spain as of 2021.
What is the difference in average nitrate concentration in freshwater between Greece and Spain?
78.72 milligrams per liter, with Greece ahead.
How many years of comparable data are there for Greece and Spain?
14 years are reported by both, from 1999 to 2021.
How do Greece and Spain rank globally for average nitrate concentration in freshwater?
Greece ranks 1st and Spain ranks 2nd of 34 countries.
Where does this data come from?
European Environment Agency (2023) – with minor processing by Our World in Data, published as Average nitrate concentration in freshwater. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Greece vs Spain: Average nitrate concentration in freshwater. Statizoid, drawing on European Environment Agency (2023) – with minor processing by Our World in Data. Retrieved 23 September 2026, from https://environment.statizoid.com/compare/average-nitrate-concentration-in-freshwater/greece/spain/

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About this data

Indicator
Average nitrate concentration in freshwater
Unit
milligrams per liter
Source
European Environment Agency (2023) – with minor processing by Our World in Data
Licence
CC BY 4.0 (Our World in Data)
Coverage
34 places, 655 data points, 1992–2021
Last refreshed

Average annual concentration of nitrate in groundwater.