Farm tanks

Planning, managing and constructing farm water storage

Farm tanks are a key part of water security on rural properties. They store water from dams, bores, roof catchments or reticulated systems, and help ensure reliable supply for stock, domestic use and irrigation, especially during dry seasons.

What to consider

• Storage capacity. Know how much water you need — daily, weekly and seasonally — for stock, domestic use and irrigation. Plan for worst-case scenarios, like lactating stock grazing dry feed in summer.
• Water sources. Tanks may be filled from dams, bores, roof runoff or piped systems. Make sure the source is reliable and the water is fit for purpose.
• Water quality. Test water for salinity, pH and contaminants like algae, organic matter or chemicals. Poor quality water affects stock health and equipment. Use filtration or aeration if needed.
• Reticulation systems. Tanks often form part of a broader network including pumps, pipes and troughs. When designing a system:
  • Choose pump types and pipe diameters based on distance, elevation and flow rate.
  • Select troughs suited to your livestock — consider size, location and materials.
  • Factor in future expansion and changing water needs.
• Placement and layout. Tanks should be located to maximise gravity-fed flow where possible, reduce pumping costs and support efficient water distribution across the farm.
• Drought planning. Tanks play a critical role in drought preparedness. A well-designed system helps you manage grazing, protect pastures and maintain stock condition when surface water is limited.

Farm tanks are more than just backup — they’re central to a resilient water system. With the right planning, they support productivity, animal welfare and peace of mind.

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Related links

• On-farm water storages – planning, design and management - Guidance on siting, designing, constructing and monitoring on-farm water storages, including tanks and dams.
• Farm water quality – testing and treating for stock and domestic use - Offers detailed advice on water quality risks, testing procedures and treatment options for tank water sourced from dams, bores or roof runoff.