Denmark vs Poland: Average ammonium concentration in freshwater

Denmark

0.0961 milligrams per litre

in 2021

Poland

0.0885 milligrams per litre

in 2021

Denmark rank

13th

Poland rank

15th

Average ammonium concentration in freshwater over time

Denmark currently reports 0.0961 milligrams per litre against 0.0885 milligrams per litre in Poland, a difference of 0.0076 milligrams per litre.

That makes Denmark's figure about 1.1 times Poland's.

The two have swapped places 3 times across 24 shared years of data; in 1998 it was Poland ahead.

Denmark ranks 13th and Poland ranks 15th of 32 countries.

Indicator: Average ammonium 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: 32 places, 693 data points, 1992–2021
Last refreshed: 07 August 2026

Average annual concentration of ammonium in lakes.