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Water Supply

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E-WASH Hydraulic Modelling 2021


Master Plan Report 2020


Water Bill Law

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Water Supply

  • Prepare Water Supply and Sanitation Investment Plan
  • Increaseaccess to improved water supply and sanitation services
  • Improve the financial viability of existing water utilities.
  • Increase the investment plan capacity.

Why Do We Treat Drinking Water ?

Drinking water is treated to protect public health by removing microorganisms and natural or man-made chemicals that may cause illness to consumers.
Water Purification may also be used to improve the water’s color, taste, and odors required.

Water Quality

    • Water quality is the physical, chemical, biological characteristics of water that determines its suitability for a variety of uses and for protecting the health.
    • Water quality depends on the local geology and ecosystem, as well as human uses such as sewage dispersion, industrial pollution, and agriculture runoff.
    • Water is essential to sustain life, and a satisfactory supply (adequate, safe, and accessible) must be available to all. Improving access to safe drinking-water can result in tangible benefits to health
    • The great majority of evident water-related problems are the result of microbial (bacteriological, viral, protozoan, or other biological) contamination.
    • World Health Organization has set the Guidelines for Drinking-water Quality of which the primary purpose is the protection of public health.

Basic Parameters of Water

Physical Properties

    • Color
    • Odor
    • Temperature
    • turbidity
    • Solids
    • Conductivity


Chemical Properties

  • pH
  • Dissolved oxygen (DO)
  • Chemical oxygen demand (COD)
  • Biochemical oxygen demand (BOD)
  • Inorganic Chemicals (Metals, minerals, and nutrients)
  • Organic Chemicals (Pesticides, Benzene, etc.)

Biological Properties

    • Pathogens (Viruses, Bacteria, Protozoa, etc.)
    • Fecal Coliforms