Rainwater harvesting estimated costs

It is simple, easy and offers advantages like self-sufficiency and the convenience of not being dependent on regulated water resources.


It presents the opportunity to replace high quality drinking water with Rainwater, for low grade uses such as toilet flushing, irrigation, household cleaning and car washing. As a result you will save water, reduce your water bill and have access to an adequate water supply when none is available.

When necessary Rainwater can even be used for consumption, if properly boiled/sterilised.

Estimated costs:


Will vary depending on the size and quantity of the tank(s) – our estimated costs are for tanks ranging from 750 Litres up to 5000 Litres.
Range: R2500 – R6000

Base / plinth

The tank must be installed on a sound, level and smooth surface. Level paving will suffice, or a properly designed tank stand, alternatively a concrete plinth needs to be built.

Concrete Plinth 1.5m by 1.5m – 1500 L & smaller
Range: R4500 – R5500

Concrete Plinth 2m by 2m – 2500 L to 5000 L
Range: R5500 – R6500


Pre-filtration helps remove debris from initial rainwater therefore improving the quality of water entering into the tank (you can choose one, two or all three). It depends on preference and what the water will be used for.

  1. Mesh / Tank Screen (at top of tank) – Helps keep out smaller debris, insects etc.
    Range: R310 – R430
  2. Rainhead (i.e. Leaf Eater) – Directs leaves & debris away from water flow.
    Range: R650 – R850
  3. First Flush Diverter – Flushes away the intitial most contaminated rainwater.
    Range: R650 – R850


For installation contact a Preferred Installer in your area. Installation only, excluding additional material required.
Range: R2500 per day

Guttering and piping

Will vary depending on the type of installation and setup, estimated costs provided are for simple installations with gutters in place that require little piping.
Range: R300 – R1000
Please note: larger more complex systems will cost more due to additional piping/guttering modifications.