You can consider numerous materials when it comes to water tanks from galvanized steel to stainless steel, poly-plastic, fiberglass and concrete. The question is which one is the best for your needs?

You probably want to find a tank to condense rainwater, you have to determine which one will provide you the most features for the budget you are willing to spend.

This could be overwhelming and challenging to answer, primarily because you can find numerous types of water storage containers such as plastic, concrete and steel water tanks.

That is the main reason why you should continue with reading to learn which tank is the best choice for your particular requirements.

  1. Plastic Water Tank

Poly or plastic water tank mostly come from the process called rotational molding, and it means that the size of the tank will be limited to the size of the mold the manufacturer is using. You will notice them in rural and domestic settings, and maximal capacity can go up to 50 thousand liters.

Most people consider this as the main disadvantage since the average household in the USA would require at least 250 thousand liters annually. Therefore, by following this calculation, you would need at least two tanks so that you can use it without any additional problem.

However, if you wish to install a few tanks and you will need to change plumbing and arrangement to maintain the fittings and tank outlets. Since these tanks can go up to 24 thousand liters, as the size of the container increases the price for one liter will decrease.

That is why most manufacturers do not make the larger containers, which means that you should consider a steel water tank if you wish a more meaningful solution than this one.

Have in mind that they are not corrosive, which means that they will not rust and lightweight construction will increase the risk of moving in high winds, but it is simple to move than other types.

  1. Galvanized Steel Water Tank

This is another typical water tank that shares immersive popularity due to its longevity and sturdiness. You can find old galvanized steel tanks, but they did not use tank liner, and that affected the taste of water due to the high concentration of zinc.

You should have in mind that galvanizing is a process of applying metal to metal, which means that this particular type of tank comes from steel galvanized to zinc. Even though it is not entirely resistant from corrosion, you will be able to use it for years after purchase.

However, we recommend you to apply the rust-resistant coating since when the corrosion starts, you will interfere with the quality of water you wish to store inside.

We recommend you to check out this website: https://www.sciencedirect.com/topics/materials-science/galvanizing so that you can learn more on process of galvanization.

  1. Stainless Steel Tank

If you have not seen stainless steel tanks before, you should remember that it is mostly used in food processing and dairy industries because it is the safest and most durable solution that you can find on the market.

It is entirely rust and corrosion resistant, but you will have to spare a significant amount, which will be more expensive than other types of water tanks.

Stainless steel tends to vary in quality, which means that you should always check the manufacturing grade as well as joint areas.

We have mentioned above that stainless steel is corrosion resistant; in some cases, it can happen in joints and solders in screws and rivets.

The main reason for corrosion could be external factors such as metal vulnerable to rust and iron deposits that could cause pitting corrosion when coming in contact with stainless steel.

  1. Concrete Tank

You should remember that Ferro-cement and concrete water tanks are challenging to handle and quite cumbersome. Even though these tanks became less popular in the last few decades, it is still the most common tanks installed in urban environments.

Problem with concrete is that it can interfere with the leach line and taste of water, which means that it will increase its pH levels. Leaking and cracking are the most common disadvantages by previous users.