How many years of comparable data are there for Costa Rica and Iceland?

25 years are reported by both, from 2000 to 2024.

Where does this data come from?

WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data, published as Share of the population using improved water sources. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Costa Rica vs Iceland: Share of the population using improved water sources

Costa Rica

100.0%

in 2024

Iceland

100.0%

in 2024

Costa Rica rank

1st

Iceland rank

1st

Share of the population using improved water sources over time

Costa Rica
Iceland

How they compare

Costa Rica currently reports 100.0% against 100.0% in Iceland, a difference of 0.0%.

Across all 25 years both countries report, Iceland has been ahead every year.

Costa Rica ranks 1st and Iceland ranks 1st of 231 countries.

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

Head to head by decade

Decade	Costa Rica	Iceland	Difference	Ahead
2000s	96.6%	100.0%	3.4%	Iceland
2010s	99.2%	100.0%	0.8%	Iceland
2020s	100.0%	100.0%	0.0%	—

Averages of every year both report within each decade.

Frequently asked questions

Which has higher share of the population using improved water sources, Costa Rica or Iceland?: Costa Rica, at 100.0% against 100.0% in Iceland as of 2024.
What is the difference in share of the population using improved water sources between Costa Rica and Iceland?: 0.0%, with Costa Rica ahead.
How many years of comparable data are there for Costa Rica and Iceland?: 25 years are reported by both, from 2000 to 2024.
How do Costa Rica and Iceland rank globally for share of the population using improved water sources?: Costa Rica ranks 1st and Iceland ranks 1st of 231 countries.
Where does this data come from?: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data, published as Share of the population using improved water sources. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Costa Rica vs Iceland: Share of the population using improved water sources. Statizoid, drawing on WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data. Retrieved 29 August 2026, from https://environment.statizoid.com/compare/share-of-the-population-using-improved-water-sources-wash/costa-rica/iceland/

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<a href="https://environment.statizoid.com/compare/share-of-the-population-using-improved-water-sources-wash/costa-rica/iceland/">Costa Rica vs Iceland: Share of the population using improved water sources</a> — Statizoid

About this data

Indicator: Share of the population using improved water sources
Unit: %
Source: WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 231 places, 5,586 data points, 2000–2024
Last refreshed: 28 August 2026

Proportion of people who use an improved drinking water source, regardless of collection time. An improved drinking water source is a safely designed drinking water source and includes e.g. piped water, boreholes or tubewells and packaged or delivered water.