Common Causes of Water Heater Leaks

One of the most common problems with water heaters is leaks. These can range from minor drips to major ruptures, causing damage to the surrounding area and potentially leading to water wastage and increased utility bills. In our years of providing reliable water heater repair in Chatsworth, CA, Roberts Plumbing Hydro Jet & Rooter is familiar with the typical causes of leaks. These include the following:


As water heaters age, the metal tank can gradually corrode, weakening its structure and creating vulnerabilities that can lead to leaks. Corrosion can be further accelerated by factors such as high mineral content in the water or lack of routine maintenance. It is essential to drain and flush the water heater periodically to prevent corrosion-related leaks, which can eventually lead to hot water heater replacement. Also, regularly check and replace the sacrificial anode rod to reduce corrosion.


The pressure relief valve prevents excessive pressure buildup inside the water heater tank. However, when the PRV fails or becomes faulty, the pressure can cause the tank to develop cracks or weaken the connections, resulting in leaks. To prevent this from happening, you should check the valve and replace it if necessary. Have professional water heater services handle this task to avoid potential risks.


Water heaters have several connections, including inlet and outlet pipes, drain valves, and temperature and pressure relief valves. If any of these connections are loose, improperly sealed, or damaged due to poor water heater installation or maintenance, they can result in water leakage. Additionally, vibrations or changes in water pressure can further loosen these connections, exacerbating the problem.

Whether you have a traditional or tankless water heater, it is a significant investment and should be adequately cared for. Therefore, promptly addressing any issues, particularly leaks, is crucial. Hiring our professionals at Roberts Plumbing Hydro Jet & Rooter can ensure the detection of hidden problems and prevent leaks from worsening. Contact us today to request a service visit.