What is the difference in nitrate in groundwater between Portugal and Switzerland?

1.28 Milligrams per litre, with Portugal ahead.

How many years of comparable data are there for Portugal and Switzerland?

17 years are reported by both, from 2007 to 2023.

Eurostat, published as Nitrate in groundwater. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Portugal

15.7 Milligrams per litre

in 2023

Switzerland

14.42 Milligrams per litre

in 2023

Portugal rank

12th

Switzerland rank

15th

Portugal currently reports 15.7 Milligrams per litre against 14.42 Milligrams per litre in Switzerland, a difference of 1.28 Milligrams per litre.

That makes Portugal's figure about 1.1 times Switzerland's.

Across all 17 years both countries report, Portugal has been ahead every year.

Portugal ranks 12th and Switzerland ranks 15th of 24 countries.

Portugal has averaged higher in every one of the 3 decades both report.

Decade	Portugal	Switzerland	Difference	Ahead
2000s	17.23 Milligrams per litre	15.92 Milligrams per litre	1.3 Milligrams per litre	Portugal
2010s	15.4 Milligrams per litre	14.93 Milligrams per litre	0.468 Milligrams per litre	Portugal
2020s	15.39 Milligrams per litre	14.27 Milligrams per litre	1.12 Milligrams per litre	Portugal

Averages of every year both report within each decade.

Which has higher nitrate in groundwater, Portugal or Switzerland?: Portugal, at 15.7 Milligrams per litre against 14.42 Milligrams per litre in Switzerland as of 2023.
What is the difference in nitrate in groundwater between Portugal and Switzerland?: 1.28 Milligrams per litre, with Portugal ahead.
How many years of comparable data are there for Portugal and Switzerland?: 17 years are reported by both, from 2007 to 2023.
How do Portugal and Switzerland rank globally for nitrate in groundwater?: Portugal ranks 12th and Switzerland ranks 15th of 24 countries.
Where does this data come from?: Eurostat, published as Nitrate in groundwater. Statizoid refreshes it automatically from the source and publishes the full history for both places.