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RAIN HARVESTING

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Rain harvesting involves the collecting of rainwater in a rain barrel or cistern, usually from a roof of a house or building to supplement fresh water supply. A rain barrel or cistern is most effective when the stored water is used regularly as this allows for renewed harvesting of rainwater. 

COMPATIBILITY

  • Gutter slope should have a 0.5 to 2% incline throughout the gutter length to ensure runoff
  • Captured rainwater can be used for non-potable water uses such as gardening, or in a building to flush toilets

 

MAINTENANCE

  • Cleaning of the rain barrel and cistern, as required
  • Clearing downspout of leaf and debris to allow runoff, which will increase the amount and quality of the rainwater collected
  • Draining rain barrel or cistern and adjusting conveyance drainage pipe to allow for alternative runoff during the winter months to prevent freezing of water buildup

 

COSTS

  • Average cost for a rain barrel is $100 and ranges depending on style and capacity. A 220-litre rain barrel holds the equivalent of approximately 9 minutes of watering with a garden hose
  • Costs for a cistern vary widely depending on capacity but can range from $150 to $10,000
  • Minimal maintenance cost if rain barrel and cistern are annually cleaned and emptied during the winter months

 

RESOURCES


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