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Reverse Osmosis & Water Treatment in Lesotho


Lesotho, officially the Kingdom of Lesotho, is a landlocked country and enclave, completely surrounded by its only neighbouring country, South Africa. 

Lesotho is located entirely within the Orange River basin. The major sub-basin river systems in Lesotho are: 

•The Senqu (Orange), which drains two thirds of Lesotho (24,485 km2), originates in the extreme north of the country and leaves Lesotho near Quthing. In its catchment area, four large dams will be constructed under the Lesotho Highlands Water Project (LHWP). 
•The Makhaleng, with a catchment area of 2,911 km2, originates in the vicinity of Mount Machache and leaves the country near Mohales Hoek. 
•The Mohokare (or Caladon) marks the border with South Africa and has a catchment area of 6,890 km2. It springs from Mount Aux Sources, and leaves Lesotho near Wepener. All its major tributaries are located in Lesotho. 
The Lets’eng-la-Letsie wetland in the Quthing district was tentatively designated as a RAMSAR site by the Government as part of its accession to the RAMSAR Convention. 
Lesotho’s natural renewable water resources are estimated at 5.23 cubic kilometers per year (km3/yr), by far exceeding its water demand (Table 2). Due to Lesotho’s commitments in the framework of the LHWP, its actual water resources will have decreased to 3.03 km3/yr by 2020. 
Major dams have been constructed in the framework of Phase I of LHWP: 
•Katse Dam in the Central Maluti Mountains was completed in May 1997. It is a concrete arch dam, 185 m high, with 710 m crest length and a storage capacity of 1.95 km3. It impounds the Malibamatso River catchment (1,866 km2); 
•Mohale Dam is a concrete faced rockfill dam, 145 m high, with 540 m crest length. It impounds the Senqunyane River catchment (938 km2) and has a storage capacity of 0.86 km3; 
•Muela Dam, a 55 m high, 6 million cubic meters (m3) capacity dam acts as the tailpond of the Muela hydropower station. 

The World Bank reports that at least 80 countries have water shortages and 2 billion people lack access to clean water. More disturbingly, the World Health Organization has reported that 1 billion people lack enough water to simply meet their basic needs, unfortunately in many countries water is scarce or contaminated.

 Pure Aqua provides wide range of filtration and economical solutions based on the Lesotho's water resources.

Lesotho's main water resources are:

  • Surface water “is water from river, rain water, lake or fresh water wetland, which can be treated using different methods, such as Ultrafiltration SystemsMedia Water Filters, Brackish Water RO.
  • Ground Water or brackish water is from water located in the pore space of soil and rock “Borehole well”, which can be treated using Reverse Osmosis Systems, Media Water FiltersChemical Dosing, UV Sterilizers.
  • Government water supply, which could have high level of hardness or high level of chlorine, can be treated with Water Softeners, Media Water Filters

Pure Aqua manufacture water treatment systems that meets the World Health Organization requirements.



Completed Water Purification Projects for Lesotho:

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