August 22, 2003
The Ministry of Agriculture, Forestry and Fisheries, Ministry of Land, Transportation and Infrastructure and Ministry of the Environment compiled a report on state of population covered by wastewater treatment facilities across the nation as of the end of FY 2002 (March 31, 2003).
The three Ministries agreed that they adopted the population served with wastewater treatment facilities, including sewage, agricultural effluent treatment facilities, household wastewater treatment facilities and community plants, as an indicator describing state of dissemination of wastewater treatment facilities. The information on the state of dissemination as of the end of a fiscal year was firstly released for FY 1996, and it has continued since then.
Local governments have been implementing improvement of wastewater treatment facilities efficiently and effectively on the basis of the "prefectural plan" that stipulates areas, methods and timeframes of the improvement.
The number of the people served with wastewater treatment facilities across Japan as of March 31, 2003 is 95.99 million, 2.73 million increase since the end of FY 2001. Dissemination rate, which is the ratio of number of people covered by wastewater treatment facilities to total population, is 75.8% (73.7% as of March 31, 2002).
However, there is a big gap between population served with wastewater treatment facilities in big cities and medium and small towns and villages. Namely, dissemination rate in small towns with population under 50 thousand is only 53.0%.
The breakdown of number of people served with wastewater treatment facilities by facility types includes 82.57 million served with sewage, 3.11 million by agricultural effluent treatment facilities, 9.93 million by johkasoh, a on-site treatment system for domestic wastewater, and 380 thousand by community wastewater treatment plants.
|*||FY 2002 Population covered by Wastewater Treatment Facilities|
|*||FY 2002 Population Covered by Wastewater Treatment Facilities by City Scale|