Japan vs New Zealand: Wastewater - connection rates to treatment — Public total treatment
Wastewater - connection rates to treatment — Public total treatment over time
- Japan
- New Zealand
How they compare
New Zealand currently reports 84.1 Percentage of population against 81.1 Percentage of population in Japan, a difference of 3 Percentage of population.
Across all 19 years both countries report, New Zealand has been ahead every year.
Japan ranks 21st and New Zealand ranks 19th of 36 countries.
New Zealand has averaged higher in every one of the 3 decades both report.
Head to head by decade
| Decade | Japan | New Zealand | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 49 Percentage of population | 80 Percentage of population | 31 Percentage of population | New Zealand |
| 2000s | 68.44 Percentage of population | 81.15 Percentage of population | 12.71 Percentage of population | New Zealand |
| 2010s | 76.84 Percentage of population | 82.57 Percentage of population | 5.73 Percentage of population | New Zealand |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher wastewater - connection rates to treatment — public total treatment, Japan or New Zealand?
- New Zealand, at 84.1 Percentage of population against 81.1 Percentage of population in Japan as of 2016.
- What is the difference in wastewater - connection rates to treatment — public total treatment between Japan and New Zealand?
- 3 Percentage of population, with New Zealand ahead.
- How many years of comparable data are there for Japan and New Zealand?
- 19 years are reported by both, from 1990 to 2016.
- How do Japan and New Zealand rank globally for wastewater - connection rates to treatment — public total treatment?
- Japan ranks 21st and New Zealand ranks 19th of 36 countries.
- Where does this data come from?
- Organisation for Economic Co-operation and Development, published as Wastewater - connection rates to treatment — Public total treatment. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
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