TANKLESS® requires absolutely zero space above ground. This allows you to design and use your ground space above the rainwater storage in a way that bests suits your needs, such as:

  • Car Park or Driveway
  • Lawn
  • Courtyard Paving
  • Vegetable Garden
  • Fernery/Rock Garden

TANKLESS® delivers a safer, more efficient and effective system of rainwater collection.

  • TANKLESS® is completely safe (every 1 litre of rainwater equates to 1 kg of weight in a rainwater tank which means a full 1000 litre tank weighs at least one tonne)
  • TANKLESS® can be installed in yards with even the most limited access, eliminating the added expense of hiring costly equipment such as cranes
  • TANKLESS® is flexible in capacity, shape and configuration
  • TANKLESS® channels rainfall directly into the system
  • TANKLESS® has a multi liner system which prevents leakage
  • TANKLESS® is solidly constructed and has a traffic-able capacity rated up to 3 tonne (so you can even park your car on it!)
  • TANKLESS® is vandal proof and UV proof
  • TANKLESS® comes in a standard finish, but can be upgraded to a finish that suits you and your lifestyle i.e. lawn/turf, garden or pavement
  • TANKLESS® maximizes rainwater collection and storage via quality Roof & Surface water with an optional connection to your storm water main collection pipe
  • TANKLESS® has superior filtration qualities as water is filtered when it passes through screenings within the unit. This process also alleviates hydro-static issues often associated with underground tank systems (including underground concrete tanks).
  • TANKLESS® uses significant volumes of screenings in its construction, thereby adding weight to the system and alleviating hydro- static issues often associated with other underground products available on the market i.e. the weight holds the water storage cells securely in position in the ground preventing movement
  • TANKLESS® is solidly constructed as the rock screenings serve to surround each water storage cell and form pillars which further serve to strengthen its load bearing capacity – you can even upgrade your installation to a Class 5 passenger car & 4 axle Truck/Traffic finish.
  • Engineering reports. Independent load bearing tests .Weight drop test & a flex test data report available on request.


  • They are solely reliant on partial roof catchment
  • Usually they can only be connected to one or two down pipes, and therefore DO NOT maximize rainwater collection
  • Aesthetically, rainwater tanks and connecting pipes are not pleasing to the eye, impacting on the balance of hard and soft landscapes
  • Rainwater tanks take up valuable space in the yard – especially with the current trend of larger homes and smaller blocks where space is at a premium and where rainwater tanks are a trade off for a better quality lifestyle
  • Many will have UV issues over time
  • Above ground tanks can be difficult to install in established homes where access to the back yard may require the hire of an expensive crane
  • Available space can limit the size of the tank to be installed reducing rainwater storage capacity

Disadvantages of Grey Water Systems:

  • While claiming Class A water, there are concerns surrounding this issue. Studies on the relationship between grey water and it’s effects on soil structure suggest that extremely high levels of sodium in grey water have a disastrous effect on the soil structure within six months of irrigating
  • When using grey water on gardens, over time, PH levels become high on the alkalinity scale which locks up soil nutrients. This stresses plants, causing them to become more susceptible to pests and disease
  • Apart from being extremely expensive, the grey water system also fails homes that are on a slab base – around 90% of new homes

Disadvantages of Deep Bore Drilling:

  • There is considerable variation in the quality of water e.g. brackish, salty, rusty, depending on a combination of geological issues
  • Installation is expensive and large equipment is required to drill 30+ metres
  • Deep bores are impractical for most suburban properties


Please watch our Case Study for more info.