Steel Rainwater Tank – A rainwater tank is a water tank that is used to collect and store rainwater through pipes from the roof of your home. These tanks are devices that are used for collecting and maintaining harvested rain water. Did you know that a rainwater tank system can yield 2 358 liters of water from just 2.54cm of rain on a 92.9m2 roof?

Why do we use these tanks?

Rainwater tanks are installed at homes to make use of rainwater for later use. They are also installed to help reduce the use of main water pipes. This purpose is solely for economic or environmental reasons, and to aid self-sufficiency.

What can stored rainwater be used for?

It has been raining a good amount, allowing your rainwater tank to fill up. But what do you do with all that water now? Here are a few examples of what to use the stored rainwater for:

  • Watering your garden
  • Agriculture purposes
  • To flush your toilet
  • Use it in your washing machine when doing laundry
  • Wash your car with this water
  • If you really can, for drinking.

Steel rainwater tank

Is it safe to drink?

Well, generally yes. A properly maintained rainwater tank can provide good quality drinking water. Though, the water should be free from any harmful microorganisms or harmful levels of chemicals. The greatest potential risk to your health comes from contamination of water with harmful microorganisms such as bacteria and parasites from bird or animal droppings.

Rainwater tanks can also be contaminated from roof or plumbing materials. So, if you want to drink the rainwater in your tank, be sure to first cook it to kill all the bacteria and parasites. After you have cooked the water, it will be safe to drink and use to prepare food.

How to do maintenance on my Steel Rainwater tank?

Proper maintenance of the tank, catchment system, roof, gutters, and inlet is essential. This is to ensure that you have a safe supply of water. Maintenance is best carried out before seasons where heavy rain is to be expected.

Your roof catchments and gutters should be inspected and cleared of any leaves and other debris. This should be done every three to four months. If you have overhanging branches on your roof, then they should be removed where possible. If overhead wires are too close for safety, you should then contact your local power authority for advice on what to do.

All screens should be cleaned regularly. Your tank should not be allowed to become a breeding site for mosquitoes. If mosquitoes are detected, then the entry point should be located and closed.

steel rainwater tank

Plastic Rainwater tank or Steel Rainwater tank?

Now you are
convinced to buy a rainwater tank for your home, but which one do you get?
Should you with plastic, or should you rather spend a little more and get the
steel rainwater tank? To help you with your decision, here are the advantages
and disadvantages of each type:

Advantages of Plastic Rainwater Tanks:

  • Lighter in weight
  • Color options
  • Lower cost

Disadvantages of Plastic Rainwater Tanks:

  • Plastic reacts with heat and then produces BPA (an organic synthetic compound which might lead to a deadly disease and can even lead to reproductive hormonal disorder).
  • Phthalic acid (a very harmful acid) is commonly found in plastic. This is known to cause allergies, asthma & pregnancy complications.
  • Plastic contains chemicals like petroleum, which has an adverse effect on the nervous system and might cause respiratory irritation.
  • Stored water in a plastic tank becomes smelly and is unfit for drinking.
  • It alters the taste of water.
  • The growth of algae, fungi, and bacteria is a very common occurrence in plastic.
  • Water stored in plastic rainwater tanks are unfit for household work, like washing clothes and watering plants. This causes the clothes to lose their shine and plants dying.
  • Water from plastic rainwater tanks is not good for our skin and it also damages the quality of hair. This leads to hair fall.
  • Plastic rainwater tanks need maintenance regularly.
  • The color of the plastic rainwater tank fades due to sunlight.
  • Difficult to transport (Manufactured in one piece).
  • Plastic rainwater tanks are not eco-friendly.


Advantages of Steel Rainwater Tanks:

  • Made from galvanized steel (prevents corrosion)
  • Durable and strong
  • Lightweight
  • Size options
  • Can be repaired faster
  • Easy to transport (it is built in sections)

Disadvantages of Steel Rainwater Tanks:

  • Color options (don’t have a wide variety available like the plastic rainwater tanks)
  • Some metals can’t mix

steel rainwater tank

In other words, is a Steel Rainwater tank a good investment?

My honest opinion to you is yes. In addition, this is the best investment you can make to help not only your water bill but to save water by not using water from the main water systems unnecessary. And between the plastic rainwater tank and steel rainwater tank, which one is the best? As you can see from the advantages and disadvantages that are listed above, the steel rainwater tank is by far more superior in strength, versatility ad durability.

Feel free to read more in our article Plastic Water Tanks vs. Steel Water Tanks https://www.aquadam.co.za/plastic-water-tanks-vs-steel-water-tanks/ . You can also read more about what to use rainwater for in these articles: