Water tanks are a crucial asset, indispensable for both residential and commercial purposes. However, like any metal object exposed to water, they are susceptible to corrosion over time. It’s essential to recognize that a corroded water system can result in compromised water quality, unpleasant taste, and potential health issues. Moreover, if corrosion is neglected, it can ultimately lead to complete failure of the water tank.
Fortunately, corrosion in metal water storage tanks is preventable or, at the very least, manageable, ensuring that your water storage tank continues to function effectively. As the saying goes, “prevention is better than cure,” so it’s wise to take proactive measures and be prepared for any eventuality, knowing that corrosion can be mitigated with the appropriate actions.
In this article, we’ll explore strategies for preventing corrosion in metal water storage tanks, so be sure to take note of these methods to safeguard your structures from corrosion.
What is Tank Corrosion?
Tank corrosion arises from electrochemical reactions between the metal surface and the surrounding soil or groundwater, leading to the breakdown of the metal surface. Put simply, the tank material dissolves in the water within the tank, resulting in damage to the tank structure.
The Environmental Protection Agency (EPA) reports that around half of all underground storage tanks exhibit some degree of corrosion by the time they reach 15 years of age.
What Causes Corrosion in Water Tanks?
When you try to recall your chemistry class, metals or steels have chemical reactions when exposed to water and oxygen, and when it happens, chemical change will happen.
So here are some of the top reasons why corrosion in water storage tanks with metal cage occurs:

1. Oxidation
The oxidation of metals represents one of the primary causes of corrosion in water tanks. This process unfolds as oxygen within the water interacts with the metal, leading to its deterioration. Typically, two forms of oxidation prevail: galvanic corrosion and chemical oxidation.
Galvanic corrosion arises from the direct contact between dissimilar metals or exposure to battery acid. Conversely, chemical oxidation stems from the interaction between metal ions and atmospheric oxygen.
2. Rust Formation
Rust, essentially, is the accumulation of iron ions on the surface of a metal object. When iron is exposed to air or water, it undergoes a chemical reaction, transforming into a powdery substance known as rust. As time progresses, this rust accumulates on the metal’s surface, potentially resulting in the formation of holes that compromise its structural integrity and may cause leaks.
3. Carbonation
The presence of carbon dioxide in water can instigate corrosion. Concrete’s inherent alkalinity diminishes through a process called carbonation, where carbon dioxide interacts with hydrated cement paste in pore water. As carbon dioxide from the atmosphere permeates the concrete, it generates mild carbonic acids within the concrete’s pore solution.
How to Prevent Corrosion in Water Tanks?
Even though the risk of tank corrosion and subsequent damage is significant, there are preventive measures you can take to avoid such scenarios. Don’t panic; just follow these tips:
- Ensure proper installation of the tank.
- Make sure the tank is installed correctly, with its cap securely sealed to prevent groundwater from leaking in. Check the seams for any signs of leakage.
- Schedule regular inspections.
- Promptly arrange for professional inspections whenever equipment or components show signs of malfunction.
- Maintain your tank diligently.
- Adhere strictly to the manufacturer’s maintenance instructions during routine upkeep. Avoid overfilling the tank to prevent issues.
- Install and maintain safety valves.
- Ensure all safety valves are installed and operational to prevent tank overflow during emergencies or malfunctions.
- Check for signs of corrosion.
- Regularly inspect your tank for any stains, bulging, or leaking joints, as these are indicative of corrosion. Stay vigilant and conduct thorough inspections.
By staying vigilant and taking responsible actions, you can prevent further damage and ensure your tank remains in optimal condition.
Storage Tank Preservation? We got You Covered!
Protecting your tank from damage is a significant responsibility, with many factors to consider and adhere to. If you find tank inspection and maintenance overwhelming, don’t worry. Professional water tank service companies can efficiently handle the job for you.
At Panel Tanks Vegas by American Tanks, client satisfaction is our top priority. With over two decades of experience, we specialize in industrial and commercial tanks and tank liners. As licensed providers, we ensure compliance with international standards for protection and safety.
We stay updated with the latest innovations to better serve you. Contact us today and let us know how we can assist you!
Call Panel Tanks Vegas by American Tanks at +1 800 656 0167
Or email at info@paneltanks.vegas