Describe causes and methods of controlling water pollution. Max 20

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  • Domestic effluents; sewage / faeces / urine
  • Nitrogeneous wastes / Urea / Uric acid/ Ammonia;
  • Garbage; detergent; pollute water.
  • Pollution from domestic affluent- controlled by treating domestic wastes / using biotechnology;
  • Banning use of phosphate – based detergent;
  • Use of plastic pipes – instead of lead pipes.
  • Recycling garbage;
  • Industrial waste; radioactive wastes;
  • Industrial wastes have heavy metals which include lead/ zinc / copper/
  • Chromium mercury;
  • Treating industrial wastes; Carrying out environmental assessment before establishing industries;
  • Hot water; cooling hot water;
  • Oil spills; controlled by cleaning oil spills/ Biotechnology; 
  • Penalising industrial / Industries / companies causing pollutions;
  • Agrochemicals; such inorganic fertilizers; herbicides/Insecticides/ Pesticides / Fungicides;
  • -Pollution due to agrochemicals – controlled by mechanical control of weeds; biological control of weeds / pests; use of biodegradable organic fertilizer / herbicides/ insecticides/ organic farming/ Educating farmers on correct amout of agrochemicals;
  • Silting; soil erosion; controlled by appropriate farming practices / contour farming/ reforestation/ building gabions/ terracing; 
Total 27 Max 20

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