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

3.1 Milligrams per litre, with Italy ahead.

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

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.

Italy

18.8 Milligrams per litre

in 2023

Portugal

15.7 Milligrams per litre

in 2023

Italy rank

9th

Portugal rank

12th

Italy currently reports 18.8 Milligrams per litre against 15.7 Milligrams per litre in Portugal, a difference of 3.1 Milligrams per litre.

That makes Italy's figure about 1.2 times Portugal's.

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

Italy ranks 9th and Portugal ranks 12th of 24 countries.

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

Decade	Italy	Portugal	Difference	Ahead
2000s	23.35 Milligrams per litre	17.23 Milligrams per litre	6.13 Milligrams per litre	Italy
2010s	21.21 Milligrams per litre	15.4 Milligrams per litre	5.81 Milligrams per litre	Italy
2020s	19.86 Milligrams per litre	15.39 Milligrams per litre	4.47 Milligrams per litre	Italy

Averages of every year both report within each decade.

Which has higher nitrate in groundwater, Italy or Portugal?: Italy, at 18.8 Milligrams per litre against 15.7 Milligrams per litre in Portugal as of 2023.
What is the difference in nitrate in groundwater between Italy and Portugal?: 3.1 Milligrams per litre, with Italy ahead.
How many years of comparable data are there for Italy and Portugal?: 17 years are reported by both, from 2007 to 2023.
How do Italy and Portugal rank globally for nitrate in groundwater?: Italy ranks 9th and Portugal ranks 12th 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.