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If you’re in the market for a new water tank, one of the most important things to consider is the material it’s made of. Different materials offer different benefits and drawbacks, so it’s important to choose the one that’s right for your needs. Here’s a quick guide to the most common water tank materials and their characteristics.
Most Common Water Tank Materials and Their Pros and Cons:
Here are five common water tank materials and their pros and cons.
1. Polyethylene:
Polyethylene (or “poly”) tanks are a popular choice because they’re lightweight, durable, and easy to transport and install. They’re also resistant to UV rays, so they won’t degrade or become brittle over time if exposed to sunlight. Poly tanks come in a range of sizes and shapes and are often the most affordable option.
Pros:
- Affordable and lightweight, making it easy to install
- Durable and long-lasting, with a lifespan of 10-20 years
- Resistant to rust and corrosion
- Available in a variety of shapes and sizes to fit different spaces
- Able to withstand moderate water pressure
Cons:
- May be prone to cracking and damage from UV exposure
- May not be fire-resistant
- May not be able to withstand high water pressure
- May require special fittings for installation
2. Steel:
Steel tanks are another popular choice, particularly for larger installations. They’re sturdy and can be custom-built to fit specific requirements, but they’re also heavy and can be expensive. Steel tanks can be coated to prevent corrosion, but over time they may rust and develop leaks.
Pros:
- Strong and durable, with a lifespan of 20-30 years
- Fire-resistant
- Can be installed in a variety of locations, including underground
- Resistant to damage from UV exposure
Cons:
- May be prone to rust and corrosion if not properly maintained
- May require maintenance to prevent leaks and other issues
- Can be heavy and difficult to install
- May be more expensive than plastic tanks
3. Concrete:
Concrete tanks are the most durable option, with a lifespan of up to 50 years. They’re also good at retaining heat, so they can be a good choice for storing hot water. However, they’re very heavy and require professional installation. Concrete tanks can also crack over time if the ground they’re on settles or shifts.
Pros:
- Durable and long-lasting, with a lifespan of 50 years or more
- Fire-resistant, making it a good option in areas prone to wildfires
- Low-maintenance
- Able to withstand high water pressure
Cons:
- Expensive compared to other options
- Heavy and difficult to install
- Prone to cracking over time
- May require a concrete pad for proper installation
4. Fiberglass
Fiberglass tanks are lightweight and resistant to corrosion, making them a good choice for outdoor installations. They’re also easy to maintain and can be custom-built to fit specific requirements. However, they can be expensive and may not be as durable as some other options.
Pros:
- Lightweight and easy to install
- Durable and long-lasting, with a lifespan of 25-30 years
- Resistant to rust and corrosion
- Able to withstand high water pressure
Cons:
- May be more expensive than other materials
- Can be prone to cracking and damage from UV exposure
- May require special tools and expertise to install it properly
- May not be as widely available as other materials
5. PVC
PVC tanks are a budget-friendly option that are easy to install and maintain. They’re also lightweight and resistant to corrosion, but they may not be as durable as some other options. PVC tanks are best suited to smaller installations, such as in a backyard garden or for a temporary water supply.
Pros:
- Affordable and lightweight, making it easy to install
- Resistant to rust and corrosion
- Generally available in a variety of shapes and sizes
- Resistant to damage from UV exposure
- Able to withstand moderate water pressure
Cons:
- Not as durable as other materials, with a lifespan of 5-10 years
- Prone to cracking and damage from high impact or temperature changes
- May not be fire-resistant
- May not be able to withstand high water pressure
Check out our house water tank calculator to know how much water, your tank can store.
Conclusion
When choosing a water tank material, consider your budget, the intended use of the tank, and any specific requirements you may have (such as size or shape). It’s also important to choose a reputable supplier and to have the tank installed by a professional to ensure it functions properly and safely.
Dev is a senior editor on this blog. He has a BSC degree in Hydrology and is currently pursuing his second major in Water Engineering. He’s passionate about writing about water and things related to it.