Rainwater Harvesting - Commercial, Residential, Agricultural, & Industrial

Rainwater Management Specialists

Our Water Management Specialists and Engineers in Southern Africa brings a creative design approach to the escalating issue of water conservation and water treatment. We develop innovative solutions for rainwater harvesting systems and water treatment plant design. Our company was one of the first large rainwater harvesting companies in South Africa and our one knowledgeable staff have combinedexperience of over 25 years in the water business.

Why work with us?

Our company has a solid track record and have delivered successful projects throughout South Africa

Over the years we have developed extensive experience in selecting effective and reliable equipment for rainwater harvesting and water treatment systems
We have an expert engineering design team. Engineers work on each aspect of the design delivering a 3D model that can be used for procurement and installation
Our expertise and support from our local and global partners have delivered successful projects that are reliable and sustainable
In 2008 Professor Roland Schulze a world expert on water research from UKZN was asked a few questions in the Financial Mail about water security and climate change. Back then he highlighted a few...
Rainwater Harvesting means the immediate collection of rainwater running off a surface upon which it had fallen directly. Falling rainwater can provide one of the purest forms of water that is...
Using rainwater as an alternative water source has many benefits for both domestic and commercial users. Benefits range from improved water quality to reducing water and utility bills
If a rainwater system is designed and installed correctly and if the water is treated correctly it is extremely safe to drink. By implementing our design philosophy and using the correct equipment a...

All you need to know

  • Wisy underground rainwater tank

    Selecting the best rainwater tank

    Rainwater harvesting  tanks can be one of the most expensive components of a rain harvesting system, but it is probably the most important aspect of a successful installation. There are Read More
  • Residential rainwater harvesting system

    Rainwater harvesting calculator - Residential

    We get many questions about how much money will people will save with a rainwater harvesting system. We have built a calculator specific using the Durban Average mean rainfall per Read More
  • WISY 4 step system diagram

    The WISY 4 step rainwater harvesting system

    WISY AG in Germany has over many years developed  a 4 step system for effective rainwater harvesting. These fours steps can be applied in residential, commercial, agricultural and industrial rainwater Read More
  • Critical design elements

    Critical design elements

    Critical design elements for a rainwater harvesting  system If you want to design and build a rainwater harvesting system that will deliver optimum water recovery and add value to the Read More
  • 1
  • 2
  • 3

Flow diagrams for residential Rainwater Systems

Rainwater system that is used for laundry washing

We frequently get request from households or companies to convert the flushing of toilets from municipal water to rainwater.
Within the existing infrastructure of any building it is not that easy and the following need to be considered when wanting to do it.

1. A dedicated water supply need to be installed for the toilets so that rainwater can be piped from a rainwater pump. This can be complicated because generally within existing plumbing systems, water supplied to a bathroom has a single supply that will go to the basin, shower bath and toilet. If the rainwater is not potable quality a dedicated supply to the toilets need to be installed which in many instances can be quite costly.
2. There need to be a backup system for scenarios of low rainfall. If there is no water in the rainwater tank the toilets must still be able to flush, which requires a municipal connection. This in turn can be problematic because just a simple switch-over valve can result in potential contamination of municipal water with non-potable rainwater. There should always be a physical air gap between these two water sources. It requires the design of a separation system or the installation of a back-flow prevention valve.

It is therefore much easier to design a system on the outset of planning the plumbing of a new house. The other alternative is to purify all rainwater to the house to potable standard which will not require any major plumbing alterations. Our DELUXE system is ideal for this