1.2 Water Harvesting and Storage

• Ways of storing harvested water for domestic use: shallow water pans, water ponds and suitable water containers
• Harvesting rain water and surface run-off in the school environment
• Maintenance of water harvesting and storage structures
• Responsibility in harvesting and storing water for domestic use

• discuss ways of storing harvested water for domestic use
• take part in harvesting and storing water in the school for domestic use
• show responsibility in harvesting and storing water for domestic use

“How can we harvest and store water for domestic purposes?”

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1. Why we harvest and store water
   40 min · 1 practice tasks · quiz
   Water harvesting is catching rain and runoff while they fall; storage keeps that water for domestic use in dry weeks.
2. Roof rain and surface run-off
   40 min · 1 practice tasks · quiz
   Roof rain is the cleaner harvest for containers; surface run-off is muddier and usually stored in pans or ponds.
3. Shallow water pans
   40 min · 1 practice tasks · quiz
   A shallow water pan is a wide, gently banked excavation that stores run-off; it must be fenced, silt-trapped and never treated as a swimming pool.
4. Water ponds
   40 min · 1 practice tasks · quiz
   A water pond is a deeper, more permanent store than a pan, with a catchment, compacted or lined sides, an overflow and a fenced scooping point.
5. Suitable water containers
   40 min · 1 practice tasks · quiz
   Suitable stores for harvested roof water are clean, covered, food-safe containers: tanks, drums, jerrycans and clay pots, never pesticide or fuel vessels.
6. Harvesting rain and run-off at school
   40 min · 1 practice tasks · quiz
   A school initiative starts with gutters and a first flush into a tank, then leads compound run-off to a pan, using locally available materials.
7. Maintaining harvesting and storage
   40 min · 1 practice tasks · quiz
   Maintenance means cleaning gutters, using first flush, covering and scrubbing stores, and desilting pans and ponds after rain.
8. Safe use of harvested water
   40 min · 1 practice tasks · quiz
   Roof water may be boiled for drinking; pan and pond water is for washing, gardens and animals unless it is treated.
9. Responsibility for harvested water
   40 min · 1 practice tasks · quiz
   Responsibility means planning, building or fixing, using water fairly, and reporting maintenance - a rota the class actually keeps.