How many years of comparable data are there for Grenada and Tonga?

18 years are reported by both, from 2000 to 2017.

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 People using at least a basic drinking water source. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Grenada vs Tonga: People using at least a basic drinking water source

Grenada

110,392 people

in 2017

Tonga

102,986 people

in 2024

Grenada rank

190th

Tonga rank

192nd

People using at least a basic drinking water source over time

Grenada
Tonga

How they compare

Grenada currently reports 110,392 people against 102,986 people in Tonga, a difference of 7,406 people.

That makes Grenada's figure about 1.1 times Tonga's.

The two have swapped places 1 time across 18 shared years of data; in 2000 it was Tonga ahead.

Grenada ranks 190th and Tonga ranks 192nd of 231 countries.

Across the 2 decades both report, Grenada averaged higher in 1 and Tonga in 1.

Head to head by decade

Decade	Grenada	Tonga	Difference	Ahead
2000s	103,286 people	103,762 people	475.8 people	Tonga
2010s	108,776 people	105,356 people	3,419 people	Grenada

Averages of every year both report within each decade.

Frequently asked questions

Which has higher people using at least a basic drinking water source, Grenada or Tonga?: Grenada, at 110,392 people against 102,986 people in Tonga as of 2017.
What is the difference in people using at least a basic drinking water source between Grenada and Tonga?: 7,406 people, with Grenada ahead.
How many years of comparable data are there for Grenada and Tonga?: 18 years are reported by both, from 2000 to 2017.
How do Grenada and Tonga rank globally for people using at least a basic drinking water source?: Grenada ranks 190th and Tonga ranks 192nd 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 People using at least a basic drinking water source. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Grenada vs Tonga: People using at least a basic drinking water source. Statizoid, drawing on WHO/UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene (2025) – processed by Our World in Data. Retrieved 22 September 2026, from https://environment.statizoid.com/compare/people-with-access-to-at-least-basic-drinking-water/grenada/tonga/

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<a href="https://environment.statizoid.com/compare/people-with-access-to-at-least-basic-drinking-water/grenada/tonga/">Grenada vs Tonga: People using at least a basic drinking water source</a> — Statizoid

About this data

Indicator: People using at least a basic drinking water source
Unit: people
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: 18 September 2026

Number of people using an improved drinking water source, which is either available on premises, or collection time is no more than 30 minutes for a roundtrip.