Wastewater - connection rates to treatment — Public total treatment in Thailand

Thailand: Wastewater - connection rates to treatment — Public total treatment was 14.43 Percentage of population in 2023. ▲ Rising

Latest (2023)
14.43 Percentage of population
Change on year
down 5.4%
World rank
35th
of 36 countries
All-time high
15.75 Percentage of population
in 2021
All-time low
13.27 Percentage of population
in 2015
Years of data
9
2015–2023

Wastewater - connection rates to treatment — Public total treatment in Thailand, 2015–2023

0510152015201920232015: 13.3 Percentage of population2016: 13.4 Percentage of population2017: 14.4 Percentage of population2018: 14.6 Percentage of population2019: 13.9 Percentage of population2020: 15.4 Percentage of population2021: 15.7 Percentage of population2022: 15.3 Percentage of population2023: 14.4 Percentage of population

Source: Organisation for Economic Co-operation and Development. Measured in Percentage of population.

Analysis

Thailand recorded 14.43 Percentage of population for wastewater - connection rates to treatment — public total treatment in 2023.

That represents a change of down 5.4% on the previous year and up 8.7% over ten years.

Over the whole period, wastewater - connection rates to treatment — public total treatment in Thailand peaked at 15.75 Percentage of population in 2021 and was at its lowest, 13.27 Percentage of population, in 2015.

That places Thailand 35th out of 36 countries with data for 2023, putting it in the bottom quarter.

Wastewater - connection rates to treatment — Public total treatment in Thailand, year by year

Annual values for Wastewater - connection rates to treatment — Public total treatment in Thailand, 2015 to 2023.
Year Percentage of population Change
2015 13.27 Percentage of population
2016 13.36 Percentage of population +0.7%
2017 14.44 Percentage of population +8.1%
2018 14.57 Percentage of population +0.9%
2019 13.88 Percentage of population -4.7%
2020 15.37 Percentage of population +10.7%
2021 15.75 Percentage of population +2.5%
2022 15.25 Percentage of population -3.1%
2023 14.43 Percentage of population -5.4%

Averages by decade

DecadeAverage LowestHighest Years
2010s 13.9 Percentage of population 13.27 Percentage of population 14.57 Percentage of population 5
2020s 15.2 Percentage of population 14.43 Percentage of population 15.75 Percentage of population 4

Countries ranked near Thailand

  1. 32 Georgia 41.2 Percentage of population compare
  2. 33 Azerbaijan 26.2 Percentage of population compare
  3. 34 Iceland 16.4 Percentage of population
  4. 36 Costa Rica 7.2 Percentage of population compare

See the full ranking of 46 places →

More environment data for Thailand

All data for Thailand →

Frequently asked questions

What is wastewater - connection rates to treatment — public total treatment in Thailand?
Wastewater - connection rates to treatment — public total treatment in Thailand was 14.43 Percentage of population in 2023, according to Organisation for Economic Co-operation and Development.
What is the highest wastewater - connection rates to treatment — public total treatment recorded in Thailand?
The highest recorded value was 15.75 Percentage of population in 2021.
What is the lowest wastewater - connection rates to treatment — public total treatment recorded in Thailand?
The lowest recorded value was 13.27 Percentage of population in 2015.
How does Thailand rank for wastewater - connection rates to treatment — public total treatment?
Thailand ranks 35th out of 36 countries with data for 2023.
Is wastewater - connection rates to treatment — public total treatment rising or falling in Thailand?
Over the last ten years it is up 8.7%. The long-run trend across the full record is rising.
Where does this Thailand data come from?
The figures come from Organisation for Economic Co-operation and Development, published as part of Wastewater - connection rates to treatment — Public total treatment. Statizoid updates them automatically from the source API.

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Wastewater - connection rates to treatment — Public total treatment in Thailand. Statizoid, drawing on Organisation for Economic Co-operation and Development. Retrieved 30 August 2026, from https://environment.statizoid.com/stat/wastewater-connection-rates-to-treatment-public-total-treatment/thailand/

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About this data

Indicator
Wastewater - connection rates to treatment — Public total treatment
Unit
Percentage of population
Source
Organisation for Economic Co-operation and Development
Licence
OECD Terms and Conditions (attribution required)
Coverage
46 places, 1,131 data points, 1970–2024
Last refreshed

This dataset provides information on the level of public equipment installed by countries to managed and abate water pollution. It shows the percentage of national population connected to "public" sewerage networks and related treatment facilities, and the percentage of national population connected to "public" wastewater treatment plants, and the degree of treatment. Connected here means actually connected to a wastewater plants through a public sewage network. When analysing these data, it should be kept in mind that the optimal connection rate is not necessarily 100%. It may vary among countries and depends on geographical features and on the spatial distribution of habitats. The interpretation of those data should take into account some variations in countries' definitions, as reflected in metadata. Data source(s): Joint OECD/Eurostat questionnaire on Inland Waters. Data for non-OECD countries is sourced from UNSD (https://unstats.un.org/unsd/envstats/country_files) Contact: ENV.Stat@oecd.org Dataset release date: August 7, 2026 Country metadata - Métadonnées pays