Remote sites across Australia rely on efficient, reliable and flexible water storage systems. Whether the purpose is firefighting support, agriculture, construction, mining, dust suppression or emergency relief, having access to a stable water supply can make operations safer and more productive.
Two common solutions are onion tanks and traditional water storage tanks. While both serve the same function, they differ significantly in design, durability, portability, setup requirements and long-term cost. Choosing the right option depends on your location, timeline and operational needs.
This guide compares both storage methods to help you decide which one delivers the best performance for remote and hard-to-access environments.
What are Onion Tanks?
Onion tanks are self-supporting, open-top, collapsible water tanks typically made from reinforced PVC or other durable, flexible polymers. Their circular “onion-like” shape expands when filled and folds compactly when empty. Raven Liners supplies collapsible onion tanks designed for remote sites, emergency operations and seasonal water storage needs.
They are widely used in industries where mobility and rapid deployment matter, including:
- Firefighting support at remote bushfire zones
- Temporary camps in mining and construction
- Rural livestock and irrigation setups
- Emergency water relief and disaster response
- Environmental and dust control spraying
Key characteristics:
- No rigid frame required
- Can be transported by ute, trailer or helicopter
- Sets up in minutes without machinery
- Stable on uneven or unprepared ground
Their portability is the biggest advantage for remote sites.
What are Traditional Water Storage Tanks?
Traditional tanks are fixed or semi-permanent storage systems. These often include:
- Steel water tanks
- Concrete reservoirs
- Poly (PE) tanks
- Panel tanks with internal liners
Like onion tanks, they are used in agriculture, industrial sites and fire water storage. However, they are designed for long-term, high-capacity use and remain in one location for years.
They typically require:
- Transport in large sections or panels
- Site preparation or foundation work
- Longer installation and commissioning time
Traditional tanks are ideal for ongoing, permanent or high-volume operations. Even traditional storage tanks often require industrial tank liners to prevent corrosion and extend service life in harsh environments.
Onion Tanks vs Traditional Tanks: Key Differences
| Feature | Onion Tanks | Traditional Tanks |
|---|---|---|
| Mobility | Highly portable and can be moved frequently | Fixed in one location once installed |
| Setup Time | Minutes to a few hours | Days to weeks depending on type |
| Site Preparation | None or minimal | Usually requires foundation / levelling |
| Durability (Lifespan) | Medium to long (depends on material & handling) | Very long-term solution |
| Water Capacity | Small to medium volume (portable range) | Medium to very large volume |
| Best Use Case | Short-term, mobile, rapid deployment | Long-term, high-volume storage |
Benefits of Onion Tanks for Remote Sites
- Rapid Set-Up: No construction, foundation or equipment needed. Simply position and fill.
- Lightweight Transport: Can be packed down and moved between sites easily — ideal for seasonal or rotating operations.
- Cost-Efficient for Short-Term Use: No cost for foundation, installation teams or machinery.
- Perfect for Emergency Response: Bushfire teams, flood relief and remote firefighting services often rely on onion tanks because they deploy instantly.
- Suitable for Unprepared or Rough Terrain: They don’t require graded or level ground and remain stable when filled.
When Traditional Water Storage Tanks are the Better Choice
Choose a permanent tank when:
- Water supply is needed long-term
- Large volumes are required continuously
- The site will not be relocated
- Maximum lifespan and structural durability are priorities
These tanks are a better investment for fixed agricultural, municipal, commercial or industrial facilities.
Examples:
- Station farms with year-round livestock watering
- Industrial processing facilities
- Permanent firefighting reserve supply
- Community water storage
Which Should You Choose?
| Your Situation | Best Choice |
|---|---|
| Short-term or temporary project | Onion tank |
| Mobile or seasonal operations | Onion tank |
| Emergency response / fire support | Onion tank |
| Permanent facility or homestead | Traditional tank |
| Large-scale water supply storage | Traditional tank |
Practical Examples
- Mining exploration teams: Onion tanks are ideal because work shifts between temporary drill sites.
- Bushfire response teams: Rapid setup beats waiting for permanent supply systems.
- Remote cattle stations: Permanent steel or panel tanks offer stability and high capacity long-term.
Conclusion
Both tank types provide reliable water storage, but they serve different operational needs:
- Choose an onion tank if you need portability, speed and adaptability.
- Choose a traditional storage tank if you need long-term, high-capacity water supply at a fixed location.
Understanding your site conditions and timeframe will guide the best choice. Raven Liners can assist with selecting a tank setup that fits your environment, usage needs and budget.
