150 STANDARD 3.2.3
A GUIDE TO THE FOOD SAFETY STANDARDS FOURTH EDITION FEBRUARY 2023
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Division 2 — Design and construcon of food premises
STANDARD 3.2.3
Water storage tanks
To prevent water contamination, water storage tanks must be adequately designed,
constructed and maintained. Subclause 12(2)(a) also requires that all fixtures, fittings
and equipment have no likelihood of causing food contamination.
Factors to consider on the use of water storage tanks include:
• To prevent chemicals leaching into the water, tanks should be made of material
suitable for use with potable water (e.g. standard galvanised steel, breglass, food-
grade plasc and concrete are generally suitable but uncoated lead ashing and
preservave-treated wood are generally not suitable). Where tanks are used to
collect and store rainwater, the roofs, guers or other surfaces that collect the water
should be suitable for use with potable water or water may need to be treated.
• To prevent contaminaon by animals, insects, leaves, dirt, droppings and other
debris tanks should be securely covered and inlets, outlets and overows should be
screened or covered with guards. Outlets should face downwards to prevent things
dropping in.
• To ensure there is no buildup of contaminants from sludge or the contaminant
sources menoned above, the tank and associated system (e.g. pipes, roofs, guers,
outlets, lters, screens) should be regularly inspected and cleaned. Installing rst
ush devices or discarding the inial ush of water through downpipes may help
reduce the amount of debris accumulaon.
• To ensure breakages in the tank and associated system do not introduce
contaminants, the whole system should be well maintained including repair of
any breakages.
• Where it is known or suspected that the water is not potable (e.g. droppings found
in the water, or the tank is made of non-food-grade material), the water should be
treated as necessary to remove contaminants and not used unl conrmed to be
acceptable for human consumpon.
4(3) If a food business demonstrates that the use of non-potable water for a purpose
will not adversely affect the safety of the food handled by the food business, the food
business may use non-potable water for that purpose.
Businesses may use non-potable water provided they can demonstrate to the
appropriate food regulatory agency that the quality of the water and its intended use
will not affect food safety. Evidence may include the reasons why the water is non-
potable and the systems in place to ensure that the water will not contaminate food or
equipment that comes in contact with food on the premises.
Examples of uses that may be appropriate for non-potable water include refrigeration
equipment, fire-fighting and certain cleaning activities (e.g. AS 4674-2004 states that
non-potable water may be used for cleaning garbage areas). Use of seawater for specific
purposes in seafood production is described in Standard 4.2.1 — Primary Production and
Processing Standard for Seafood.
If a food business uses any non-potable water supplies, there must be no cross-
connections between potable and non-potable water supplies, to prevent contamination
of the potable water.