When it comes to storing water, the terms cistern and water tank are often used interchangeably. However, while they both serve the same basic purpose—holding water—there are important differences between the two. Understanding these differences can help you choose the right solution for your home, farm, or business.
In this blog, we’ll break down what a cistern is, how it compares to a standard water tank, and where each is best used.
What Is a Cistern?
A cistern is a waterproof container designed specifically to collect and store rainwater or non-potable water for later use. Traditionally made from stone, concrete, or clay, modern cisterns are now available in plastic, fiberglass, or steel.
Cisterns are often installed underground, though they can also be found above ground in some applications.
Common Uses for a Cistern:
Rainwater harvesting
Landscape irrigation
Toilet flushing or laundry use (non-potable)
Emergency water supply
What Is a Water Tank?
A water tank is a general-purpose container used to store water for a wide range of applications. It can be made from various materials, including plastic, steel, or fiberglass, and comes in various sizes and styles, including vertical, horizontal, insulated, and portable options.
Water tanks are commonly used for both potable (drinking) and non-potable water storage.
Common Uses for a Water Tank:
Residential and commercial drinking water supply
Agricultural and livestock watering
Industrial water storage
Fire protection reserves
Key Differences Between a Cistern and a Water Tank
| Feature | Cistern | Water Tank |
|---|---|---|
| Primary Use | Rainwater or non-potable storage | Potable and non-potable storage |
| Installation | Often underground | Above ground or underground |
| Materials | Concrete, plastic, fiberglass | Plastic, steel, fiberglass |
| Water Source | Rainwater, greywater | Municipal, well, or rainwater |
| Accessibility | Typically requires pumps or pipes | Often has taps or valves |
Which One Should You Choose?
The right choice depends on your specific needs:
Choose a cistern if you’re focused on rainwater collection or want an underground solution that blends into your landscape. It’s ideal for irrigation, flushing, or emergency use.
Choose a water tank if you need a versatile, easy-to-access solution for daily potable or non-potable water needs.
Both options offer great water storage capabilities, but the key difference lies in the purpose and placement.
Final Thoughts
A cistern and a water tank both help ensure a steady water supply, but they serve slightly different roles. By understanding how they differ, you can make the best decision for your property and water usage goals.
Looking to install a cistern or a water tank? Get in touch with our team for expert advice and high-quality solutions tailored to your needs.
