Domestic Wastewater — Emissions in Tonga

Tonga: Domestic Wastewater — Emissions was 0.0045 kt in 2023. ▬ Flat

Latest (2023)
0.0045 kt
Change on year
down 0.4%
World rank
167th
of 178 countries
All-time high
0.005 kt
in 2021
All-time low
0.0045 kt
in 2023
Years of data
34
1990–2023

Domestic Wastewater — Emissions in Tonga, 1990–2023

00.0020.0040.0061990200620231990: 0.005 kt1991: 0.005 kt1992: 0.005 kt1993: 0.005 kt1994: 0.005 kt1995: 0.005 kt1996: 0.005 kt1997: 0.005 kt1998: 0.005 kt1999: 0.005 kt2000: 0.005 kt2001: 0.005 kt2002: 0.005 kt2003: 0.005 kt2004: 0.005 kt2005: 0.005 kt2006: 0.005 kt2007: 0.005 kt2008: 0.005 kt2009: 0.005 kt2010: 0.005 kt2011: 0.005 kt2012: 0.005 kt2013: 0.005 kt2014: 0.005 kt2015: 0.005 kt2016: 0.005 kt2017: 0.005 kt2018: 0.005 kt2019: 0.005 kt2020: 0.005 kt2021: 0.005 kt2022: 0.004 kt2023: 0.004 kt

Source: Food and Agriculture Organization of the United Nations. Measured in kt.

Analysis

Tonga recorded 0.0045 kt for domestic wastewater — emissions in 2023. That is the lowest value across all 34 years on record.

Compared with earlier readings it is down 0.4% on the previous year and down 8.6% over ten years.

Over the whole period, domestic wastewater — emissions in Tonga peaked at 0.005 kt in 2021 and was at its lowest, 0.0045 kt, in 2023.

Tonga ranks 167th of 178 countries on this measure, in the bottom quarter.

Domestic Wastewater — Emissions in Tonga, year by year

Annual values for Domestic Wastewater — Emissions (N2O) in Tonga, 1990 to 2023.
Year kt Change
1990 0.0046 kt —
1991 0.0046 kt +0.2%
1992 0.0046 kt +0.1%
1993 0.0046 kt +0.1%
1994 0.0046 kt +0.1%
1995 0.0046 kt +0.1%
1996 0.0046 kt +0.0%
1997 0.0046 kt +0.4%
1998 0.0046 kt +0.7%
1999 0.0047 kt +0.6%
2000 0.0047 kt +0.6%
2001 0.0047 kt +0.6%
2002 0.0048 kt +0.6%
2003 0.0048 kt +0.6%
2004 0.0048 kt +0.6%
2005 0.0048 kt +0.6%
2006 0.0049 kt +0.6%
2007 0.0049 kt +0.4%
2008 0.0049 kt +0.3%
2009 0.0049 kt +0.2%
2010 0.0049 kt +0.2%
2011 0.0049 kt +0.2%
2012 0.0049 kt -0.1%
2013 0.0049 kt -0.4%
2014 0.0049 kt -0.4%
2015 0.0049 kt -0.5%
2016 0.0048 kt -0.6%
2017 0.0048 kt -0.1%
2018 0.0048 kt +0.2%
2019 0.0048 kt +0.1%
2020 0.0045 kt -6.4%
2021 0.005 kt +11.1%
2022 0.0045 kt -10.6%
2023 0.0045 kt -0.4%

Tonga compared with similar countries

  • Tonga's 0.0045 kt is below the median for upper middle income countries, which is 0.2428 kt, 2% of the median. (51 countries reporting)
  • Tonga's 0.0045 kt is below the median for East Asia & Pacific, which is 0.1971 kt, 2% of the median. (23 countries reporting)

Averages by decade

DecadeAverage LowestHighest Years
1990s 0.0046 kt 0.0046 kt 0.0047 kt 10
2000s 0.0048 kt 0.0047 kt 0.0049 kt 10
2010s 0.0049 kt 0.0048 kt 0.0049 kt 10
2020s 0.0046 kt 0.0045 kt 0.005 kt 4

Countries ranked near Tonga

  1. 164 Samoa 0.0076 kt compare
  2. 165 Saint Lucia 0.0064 kt compare
  3. 166 Seychelles 0.005 kt compare
  4. 168 Sao Tome and Principe 0.0044 kt compare
  5. 169 Saint Vincent and the Grenadines 0.0039 kt compare
  6. 170 Kiribati 0.0038 kt compare

See the full ranking of 228 places →

More climate change data for Tonga

All data for Tonga →

Frequently asked questions

What is domestic wastewater — emissions in Tonga?
Domestic wastewater — emissions in Tonga was 0.0045 kt in 2023, according to Food and Agriculture Organization of the United Nations.
What is the highest domestic wastewater — emissions recorded in Tonga?
The highest recorded value was 0.005 kt in 2021.
What is the lowest domestic wastewater — emissions recorded in Tonga?
The lowest recorded value was 0.0045 kt in 2023.
How does Tonga rank for domestic wastewater — emissions?
Tonga ranks 167th out of 178 countries with data for 2023.
Is domestic wastewater — emissions rising or falling in Tonga?
Over the last ten years it is down 8.6%. The long-run trend across the full record is flat.
Where does this Tonga data come from?
The figures come from Food and Agriculture Organization of the United Nations, published as part of Domestic Wastewater — Emissions (N2O). Statizoid updates them automatically from the source API.

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Domestic Wastewater — Emissions in Tonga. Statizoid, drawing on Food and Agriculture Organization of the United Nations. Retrieved 27 September 2026, from https://climate.statizoid.com/stat/domestic-wastewater-emissions-n2o/tonga/

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About this data

Indicator
Domestic Wastewater — Emissions (N2O)
Unit
kt
Source
Food and Agriculture Organization of the United Nations
Licence
CC BY-NC-SA 3.0 IGO (FAO)
Coverage
228 places, 7,605 data points, 1990–2023
Last refreshed

The FAOSTAT domain on Emissions from Pre- and post- agricultural production includes the greenhouse gas (GHG) emissions, and related activity data, generated from pre- and post-agriculture production stages of the agri-food systems. Data are computed following the Tier 1 methods of the Intergovernmental Panel on Climate Change (IPCC) Guidelines for National greenhouse gas (GHG) Inventories (IPCC, 1996; 1997; 2000; 2002; 2006; 2014). The domain includes methane (CH4), nitrous oxide (N2O), carbon dioxide (CO2) and CO2 equivalent (CO2eq) emissions from the above activities as well as the aggregate fluorinated gases (F-gases) emissions. Estimates are available by country, with global coverage and are updated annually.The FAOSTAT domain disseminates information estimates of CH4, N2O, CO2 emissions, F-gases, their aggregates in CO2eq in units of kilotonnes (kt, or 10^6 kg), and the underlying activity data. CO2eq emissions are computed by using the IPCC Fifth Assessment report global warming potentials, AR5 (IPCC, 2014). Data are available for most countries and territories, for standard FAOSTAT regional aggregations, and for Annex I and non-Annex I country groups.