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Country vs country: Japan and United States compared: Environment > Water stats

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Definitions

  • Availability: Water availability per capita (1961-1990 (avg.))
    Units: Thousands Cubic Meters/Person
    Units: This variable measures internal renewable water (average annual surface runoff and groundwater recharge generated from endogenous precipitation)

  • Dissolved oxygen concentration: Dissolved oxygen concentration
    Units: Milligrams/Liter
    Units: The country values represent averages of the station-level values for the three year time period 1994-96, exceptwhere data were only available for an earlier time period (1988-1993). The number of stations per country varies depending on country size; number of bodies of water; and level of participation in the GEMS monitoring system. The data from "The Wellbeing of Nations" included a smaller subset of stations representing outfalls of major watersheds. An analysis of a sample of countries with numerous stations found that the data for stations in the subset is broadly comparable to the data for all GEMS stations in those countries.

  • Drinking water > Population with improved drinking water sources > Rural: Proportion of the population using improved drinking water sources, rural.
  • Drinking water > Population with improved drinking water sources > Urban: Proportion of the population using improved drinking water sources, urban.
  • Drinking water > Population with improved drinking water sources > Urban and rural: Proportion of the population using improved drinking water sources, total.
  • Drinking water > Population with improved sanitation > Rural: Proportion of the population using improved sanitation facilities, rural.
  • Freshwater pollution: Industrial organic pollutants per available freshwater
    Units: Metric Tons of BOD Emissions per Cubic Km of Water
    Units: Emissions of organic water pollutants are measured by biochemical oxygen demand, which refers to the amount of oxygen that bacteria in water will consume in breaking down waste. This is a standard water-treatment test for the presence of organic pollutants. The data from the World Bank, which represented BOD emissions (kilograms per day) were normalized by the combination of water availability per capita and water inflow availability per capita from the WaterGap2.1 model. In calculating the ESI, the base-10 logarithm of this variable was used.

  • Percent of water resources used: Proportion of total water resources used, percentage.
  • Phosphorus concentration: Phosphorus concentration
    Units: Milligrams/Liter
    Units: The country values represent averages of the station-level values for the three year time period 1994-96, except where data were only available for an earlier time period (1988-1993). The number of stations per country varies depending on country size; number of bodies of water; and level of participation in the GEMS monitoring system. The data from "The Wellbeing of Nations" included a smaller subset of stations representing outfalls of major watersheds. An analysis of a sample of countries with numerous stations found that the data for stations in the subset is broadly comparable to the data for all GEMS stations in those countries.

  • Population connected to wastewater collecting system: Population connected to wastewater collecting system.
  • Population supplied by water supply industry: Total population supplied by water supply industry.
  • Proportion of marine area under protection: Marine areas protected to territorial waters, percentage.
  • Salinisation: Electrical conductivity
    Units: Micro-Siemens/Centimeter
    Units: The country values represent averages of the station-level values for the three year time period 1994-96, except where data were only available for an earlier time period (1988-1993). The number of stations per country varies depending on country size; number of water bodies; and level of participation in the GEMS monitoring system.

  • Severe water stress: Percent of country's territory under severe water stress
    Units: Percent of Land Area
    Units: This data is derived from the WaterGap 2.1 gridded hydrological model developed by the Center for Environmental Systems Research, University of Kassel, Germany. The modellers derived, for each country, grid cell by grid cell estimates of whether the water consumption exceeds 40 percent of the water available in that particular grid cell. These were then converted to land area equivalents in order to calculate the percentage of the territory under severe water stress.

  • Suspended solids: Suspended solids
    Units: Natural Log of Milligrams/Liter
    Units: The country values represent averages of the station-level values for the three year time period 1994-96, exceptwhere data were only available for an earlier time period (1988-1993). The number of stations per country varies depending on country size; number of bodies of water; and level of participation in the GEMS monitoring system. Data from "The Wellbeing of Nations" included a smaller subset of stations representing outfalls of majorwatersheds. An analysis of a sample of countries with numerous stations found that the data for stations in the subset is broadly comparable to the data for all GEMS stations in those countries. The data in this table was transformed using the natural logarithm.

STAT Japan United States HISTORY
Availability 2.6 thousand cubic metres
Ranked 73th.
7.09 thousand cubic metres
Ranked 47th. 3 times more than Japan
Dissolved oxygen concentration 10.18 mls/litre
Ranked 20th. 10% more than United States
9.26 mls/litre
Ranked 33th.
Drinking water > Population with improved drinking water sources > Rural 100
Ranked 7th. 6% more than United States
94.03
Ranked 85th.

Drinking water > Population with improved drinking water sources > Urban 100
Ranked 13th. About the same as United States
99.77
Ranked 56th.

Drinking water > Population with improved drinking water sources > Urban and rural 100
Ranked 8th. 1% more than United States
98.76
Ranked 62nd.

Drinking water > Population with improved sanitation > Rural 100
Ranked 8th. 1% more than United States
98.6
Ranked 40th.

Freshwater pollution 4.27 tons/cubic km
Ranked 13th. 4 times more than United States
1.14 tons/cubic km
Ranked 30th.
Percent of water resources used 20.9%
Ranked 42nd. 34% more than United States
15.57%
Ranked 37th.

Phosphorus concentration 0.06 mls/litre
Ranked 131st.
0.08 mls/litre
Ranked 127th. 33% more than Japan
Population connected to wastewater collecting system 67%
Ranked 29th.
71.4%
Ranked 14th. 7% more than Japan

Population supplied by water supply industry 97%
Ranked 14th. 14% more than United States
85%
Ranked 25th.
Proportion of marine area under protection 5.59%
Ranked 71st.
30.4%
Ranked 19th. 5 times more than Japan

Salinisation 179.29
Ranked 124th.
375.65
Ranked 98th. 2 times more than Japan
Severe water stress 9.5
Ranked 62nd.
31.3
Ranked 42nd. 3 times more than Japan
Suspended solids 3.27 mls/litre
Ranked 120th.
4.19 mls/litre
Ranked 95th. 28% more than Japan

SOURCES: Center for Environmental Systems Research, University of Kassel, WaterGAP 2.1B, 2001 via ciesin.org; United Nations Environment Programme (UNEP), Global Environmental Monitoring System/Water Quality Monitoring System, with data for an additional 29 countries from Prescott-Allen,R. The Well being of Nations, Washington, DC: Island Press, 2001; United Nations Statistics Division. Source tables; United Nations Statistics Division. Source tables; United Nations Statistics Division. Source tables; United Nations Statistics Division Original html; World Bank, World Development Indicators 2001, Washington, DC: World Bank, 2001 (for BOD emissions)and Center for Environmental Systems Research, University of Kassel, WaterGap 2.1, 2000 (for data on waterquantity). via ciesin.org; United Nations Statistics Division. Source tables; United Nations Environment Programme (UNEP), Global Environmental Monitoring System/Water Quality Monitoring System, with data for an additional 29 countries from Prescott-Allen, R. The Well being of Nations, Washington, DC: Island Press, 2001; United Nations Statistics Division. Source tables; United Nations Statistics Division. Source tables; United Nations Statistics Division. Source tables; Center for Environmental Systems Research, University of Kassel, WaterGap 2.1, 2000 via ciesin.org

Citation

"Environment > Water: Japan and United States compared", NationMaster. Retrieved from http://www.nationmaster.com/country-info/compare/Japan/United-States/Environment/Water