Referenced Documents - MCU11/0254

SWMP-Lot 4 Hofmann Drive, Noosaville                                                            5




2.0 Water Cycle Management

2.1     Background
The purpose of this section of the SWMP is to outline water saving measures that will be implemented
in the design and construction of the proposed development. The recommendations made are to
exceed the minimum requirements as set out in the Queensland Development Code to which this
development is to be assessed.


2.2     Stormwater Harvesting Tanks
In an effort to reduce the demand on town water supply and to meet the water quality objectives for this
development, it is proposed to incorporate stormwater harvesting tanks within the hydraulic design of
the proposed development.

In accordance with the Queensland Development Code, it is proposed to utilise harvesting tanks with a
capacity of 3,000 litres per unit (90,000 litres total). A minimum of 60% of the roof area of the proposed
structures is to be connected to the rainwater tanks with first flush diversion capabilities.

To achieve the reduction in loading to the town’s water supply, it is intended that this volume of water is
to be used to supply any non-potable uses within the proposed development including toilet flushing and
external uses. The tank shall also be fitted with a bypass device such that in the event the tanks become
empty, town water is used to supply the toilet flushing requirements.


2.3     Wastewater Minimisation
To further reduce the impact of water demand from the development and to minimise the loading on
the existing sewerage network, it is intended to reduce the wastewater leaving the site through the use
of “at source” measures. This will include:


        Water saving shower roses with a AAA rating or better
        Dual flush toilet cisterns that do not exceed 6 litres on full flush and 3 litres on half flush
        The use of 3 star (or higher) water efficient appliances
        Education of the end-user regarding water conservation techniques