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Objectives of supply; wholesome water requirements

Short answer

Objectives: supply safe, adequate, affordable water at all times with good pressure, protect public health, support development. Wholesome water: free from pathogens and toxic substances, clear, colourless, odourless, pleasant taste, pH 6.5-8.5, low turbidity, zero E. coli per 100 ml, meets Nepal Drinking Water Standards.

What are the objectives of a water supply scheme? Enlist the requirements of wholesome water.

Objectives of a water supply scheme

  1. To supply safe and wholesome water to all consumers.
  2. To supply an adequate quantity of water for domestic, public, commercial, industrial and fire-fighting needs.
  3. To supply water at all times, with sufficient pressure at the tap.
  4. To protect public health by preventing water-borne diseases.
  5. To make water available at an affordable cost and at convenient distances.
  6. To promote economic development and better standards of living.

Requirements of wholesome water

Wholesome water is safe to drink and pleasant in appearance, taste and odour. It should:

  • Be free from disease-causing organisms (bacteria, viruses, protozoa, worms).
  • Be colourless, clear (low turbidity), odourless and pleasant in taste.
  • Be free from toxic substances such as arsenic, lead, cadmium, fluoride and nitrate above their limits.
  • Contain minerals in permissible amounts (hardness, iron, manganese, chloride, sulphate, TDS).
  • Have a pH near neutral (6.5 to 8.5).
  • Be free from excess dissolved gases and organic matter.
  • Not be corrosive, and not cause scaling in pipes.
  • Be palatable and cool, and be available in adequate amount.
  • Meet the national standards (Nepal Drinking Water Quality Standards 2062) or WHO guideline values.

✓ Answer checked by Claude Opus 5.5 (high effort)

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