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Environment > Water Stats: compare key data on South Africa & United States

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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.
  • 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.
  • Prevalence of public-private partnerships: Cities.

    No date was available from the Wikipedia article, so we used the date of retrieval.

  • 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.
  • Drinking water > Population with improved sanitation > Rural: Proportion of the population using improved sanitation facilities, rural.
STAT South Africa United States HISTORY
Availability 1.25 thousand cubic metres
Ranked 101st.
7.09 thousand cubic metres
Ranked 47th. 6 times more than South Africa
Dissolved oxygen concentration 7.54 mls/litre
Ranked 78th.
9.26 mls/litre
Ranked 33th. 23% more than South Africa
Drinking water > Population with improved drinking water sources > Rural 79.27
Ranked 136th.
94.03
Ranked 85th. 19% more than South Africa

Drinking water > Population with improved drinking water sources > Urban 98.98
Ranked 84th.
99.77
Ranked 56th. 1% more than South Africa

Drinking water > Population with improved drinking water sources > Urban and rural 91.49
Ranked 124th.
98.76
Ranked 62nd. 8% more than South Africa

Freshwater pollution 4.74 tons/cubic km
Ranked 11th. 4 times more than United States
1.14 tons/cubic km
Ranked 30th.
Percent of water resources used 24.28%
Ranked 34th. 56% more than United States
15.57%
Ranked 37th.

Phosphorus concentration 0.73 mls/litre
Ranked 9th. 9 times more than United States
0.08 mls/litre
Ranked 127th.
Population connected to wastewater collecting system 60%
Ranked 29th.
71.4%
Ranked 14th. 19% more than South Africa

Population supplied by water supply industry 68%
Ranked 37th.
85%
Ranked 25th. 25% more than South Africa
Prevalence of public-private partnerships Mbombela and Dolphin Coast 73 million people, including through PPPs 14% of water revenues without PPPs
Proportion of marine area under protection 12.76%
Ranked 46th.
30.4%
Ranked 19th. 2 times more than South Africa

Salinisation 1,312.26
Ranked 27th. 3 times more than United States
375.65
Ranked 98th.
Severe water stress 68.5
Ranked 28th. 2 times more than United States
31.3
Ranked 42nd.
Suspended solids 4.44 mls/litre
Ranked 87th. 6% more than United States
4.19 mls/litre
Ranked 95th.
Drinking water > Population with improved sanitation > Rural 57.09
Ranked 118th.
98.6
Ranked 40th. 73% more than South Africa

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; 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; Wikipedia: Water privatization (Prevalence of public-private partnerships) (World Bank / Public-Private Infrastructure Advisory Facility: Public-Private Partnerships for Urban Water Utilities: A Review of Experiences in Developing Countries , by Philippe Marin, 2009, Overview, pp. 6-7.); United Nations Statistics Division. Source tables; Center for Environmental Systems Research, University of Kassel, WaterGap 2.1, 2000 via ciesin.org; United Nations Statistics Division Original html

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