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Belgium does not face water stress, despite its high density of population. Internal water availability is around 12,000 million m 3 /year (average 1990–2004), or 1,168 m 3 /capita/year. [5] [6] [7] The yield of groundwater is around 900 million m 3, exploited at a rate of 75%. This picture hides strong regional disparities, with the North ...
A biotic index is a scale for showing the quality of an environment by indicating the types and abundances of organisms present in a representative sample of the environment. It is often used to assess the quality of water in marine and freshwater ecosystems.
The pan-European ecological network Natura 2000 covers 428,908 hectares in Belgium, representing 12.6% of the land area and 12% of the territorial waters. [13] Famous protected areas include the High Fens, Belgium's first national park, and the Hoge Kempen National Park, which is the newest national park in Belgium, and opened in 2006. [14]
The National Water Quality Inventory Report to Congress is a general report on water quality, providing overall information about the number of miles of streams and rivers and their aggregate condition. [65] The CWA requires states to adopt standards for each of the possible designated uses that they assign to their waters.
Although the term "trophic index" is commonly applied to lakes, any surface water body may be indexed. The TSI of a water body is rated on a scale from zero to one hundred. [1] Under the TSI scale, water bodies may be defined as: [1] oligotrophic (TSI 0–40, having the least amount of biological productivity, "good" water quality);
By 2023, a new EU agriculture law may raise water reuse by six times, from 1.7 billion m3 to 6.6 billion m3, and cut water stress by 5%. [10] [40] The indirect potable reuse (IDP) project in Wulpen, Belgium, discharges recycled water to an unconfined dune aquifer.
The Directive is intended to protect human health by laying down healthiness and purity requirements which must be met by drinking water within the Community (see water quality). Articles 1 and 2 make clear the goal is wholesome and clean water as ‘intended for human consumption’, for instance in drinking, cooking, and for food.
The pH of the soda lake water is generally above 9 and sometimes the salinity is close to brackish water due to depletion of pure water by solar evaporation. Soda lakes are rich with algal growth due to enhanced availability of dissolved CO 2 in the lake water compared to fresh water or saline water lakes. Sodium carbonate and sodium hydroxide ...