Class 7 Biology Wastewater Story Sanitation and disease

Sanitation and disease

  • Poor sanitation and contaminated drinking water can cause several diseases like cholera, meningitis, hepatitis, typhoid, polio.
  • Large fraction of people defecates on dry river beds, near fields, directly in water which may cause water and soil pollution.

Fig. River bed  

  • Both ground water and surface water get polluted because ground water is the source of water for wells, springs, rivers etc.

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