Greece vs Spain: Average nitrate concentration in freshwater

Greece

115.65 milligrams per litre

in 2021

Spain

36.93 milligrams per litre

in 2021

Greece rank

1st

Spain rank

2nd

Average nitrate concentration in freshwater over time

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

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.

Indicator: Average nitrate concentration in freshwater
Unit: milligrams per litre
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: 07 August 2026

Average annual concentration of nitrate in groundwater.