The fundamentals of Rainwater Harvesting

Introduction to…. and Benefits of Rain Water Harvesting

1) What is Rain Water Harvesting?

Rainwater Harvesting is simply collecting, storing and purifying the naturally soft and pure rainfall that falls upon your roof. Rainwater may be utilized for both potable and non-potable requirements such as …

  • drinking, cooking, bathing (potable quality)
  • swimming pool replenishment
  • toilet flushing
  • laundry (reduces detergent & bleach)
  • landscape irrigation
  • livestock & animals

Water Supply options may include …

  • Municipal service
  • Groundwater well
  • Rain water harvesting

Rainwater Harvesting is the sustainable supply option. Rainwater can be utilized alone or together with other supply sources in residential, commercial and industrial projects where pure water is desired

2) Why Harvest the Rain?

Rainwater Harvesting is most suitable where …

  • groundwater is scarce
  • groundwater is contaminated
  • terrain is rugged or mountainous
  • seismic & flooding events are common
  • the aquifer is at risk of saltwater intrusion
  • population density is low
  • electricity & water prices are rising
  • water is too hard or mineral laden
  • consumers must restrict salt/chlorine intake
  • where utility service is unreliable
    … and where …
  • conservation is an objective

Practical Advantages of Rainwater Harvesting

  • Availability not subject to outside utility control
  • Not subject to pipelines interruption (seismic)
  • Quality is controlled by the consumer
  • Available even when power is interrupted
  • Reduces run-off and erosion
  • Available even when storms & disaster strike
  • Available immediately for fire suppression
  • Reduces mosquito breeding grounds
  • Thermal mass can naturally cool buildings
  • Ideal for people on low sodium diets or with health concerns (weakened immunity systems)

Qualitative Advantage of Rainwater Harvesting

  • naturally pure
  • naturally soft (no dissolved minerals)
  • free for those who collect it
  • sustainable
  • free of chlorine and its byproducts
  • free of pesticides and other man-made contaminants
  • abundantly available in Costa Rica

3) How to Harvest the Rain …

The six basic components of a Rain Water Harvesting system include:

  • Catchment: roof surface to collect the rain
  • Conveyance: channels or pipes from roof or catchment area to storage
  • Roof washing: filtration system to filter and remove contaminants
  • Storage: barrels or tanks where collected rainwater is securely stored – i.e. insect proof
  • Purification: includes filtration, ozone or UV light to purify the collected rainwater for potable use
  • Distribution: system that delivers the rainwater to the household

Water Rhapsody will tailor our systems to suit your specific requirements. With the rainfall in Johannesburg iminent, let us design your system to take advantage of our rainfall. For a free quote, contact us now on donovan@eco-h2o.co.za .

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