Rainwater harvesting

Farm buildings typically have large roof areas and collect large amounts of water that goes to waste. Why not collect the rainwater from your roof to reuse?

JRH are specialists in design, supply and install of rainwater harvesting systems. We pride ourselves in being the experts in the field.

If the collected water needs to be stored for a period of time before use, JRH can do this. Firstly, with large-scale storage tanks and secondly treating the water to keep clean and fresh for 6 months without any water movement! Why not collect and store the water for times when you need it most? This is ideal for spraying, irrigation, livestock and fire water storage regulations.

So, if you want to collect your rainwater, we have the solutions to do it. Contact us to book a free site survey.

Finance available for this solution – contact us for more information.

Looking for grants and funding? We provide a service to help with this – contact us for more information.

Key Benefits

  • Free source of water
  • Save money on water bills
  • Fast return on investment (1-6 years average)
  • Better for spraying/irrigation
  • Better for livestock drinkers and troughs
  • Goes towards environmental policies and flood prevention measures
  • As the rainwater is soft, overall better for pipe work and machines
rainwater collection tanks
rainwater storage tank


Rainwater harvesting system for spraying + new guttering

Example breakdown: In 1 year we could fill their sprayer 320 times to provide enough water to spray 5333.3 hectares.

  • 600 sq m = roof surface area per side of barn to have 20,000 L tank per side
  • 1 inch rain = 25 mm x 600 sq m = 15,000 litres of water
    • So 33.5 mm rain will fill 1 tank = 33.5 mm x 600 sq m = 20,100 litres of water
  • 700 mm (average rain fall) divided by 33.5 mm (what it takes to fill a tank) = 20.89 times the tank will be filled in a year
  • Two tanks (20,000 each = 40,000) x 20 fills = 800,000 litres (total captured)
  • Divide this by 2,500 litre tank capacity of the sprayer =  320 sprayers OR 800,000 litres divided by 150 litres per hectare of water per application = 5333.3 ha of spraying


  • We covered half of the farm’s spraying needs.
  • Due to the weather, the tanks were kept full for some time, so the customer didn’t need mains water for spraying for a while.
  • The amount of water was 1.3 million litres for the year due to increased rainfall for the year.
  • The return on investment would be 3 years.
  • Additional savings were also made:
    • In the purchase of chemicals due to better reactions from the use of natural water.
    • In the maintenance of sprayer.



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