About this Dataset

Wastewater - Connection Rates To Treatment

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 for EU countries, Iceland, Norway, Switzerland and Turkey is provisional. Data for these countries will be updated when Eurostat will have published its final data.

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 : September 3, 2025

Country metadata - Metadonnees pays

Tables

Observations

@oecd.oecd_env_epi_dsd_water_treat_df_water_treat_v1_0.observations

36.08 kB
8,253 rows
10 columns

CREATE TABLE observations (
  "dataflow" VARCHAR,
  "ref_area" VARCHAR,
  "freq" VARCHAR,
  "measure" VARCHAR,
  "unit_measure" VARCHAR,
  "time_period" BIGINT,
  "obs_value" DOUBLE,
  "obs_status" VARCHAR,
  "unit_mult" BIGINT,
  "decimals" BIGINT
);