Rusty Water - Time For Check

Rusty water coming from your hot tap is often a clear sign that your water heater’s anode rod may need replacing. The anode rod, also known as a sacrificial rod, is a crucial component inside your water heater tank. It's designed to corrode over time in order to protect the metal lining of the tank from rusting. When this rod becomes fully corroded, it can no longer perform its protective function, which leads to the tank itself beginning to rust. This rust can then enter your home’s hot water system, showing up as discolored or metallic-tasting water when you turn on the tap.

The appearance of rusty or brown water is usually limited to the hot water supply if the anode rod is the issue. If both hot and cold taps produce rusty water, the problem may be elsewhere in your plumbing system. However, when only hot water is affected, it’s a strong indicator that your water heater is the source. As the anode rod depletes, it loses its ability to attract corrosive elements in the water, allowing them to attack the steel walls of the tank instead. This makes regular inspection and timely replacement of the rod essential to prolong the life of your water heater.

Most anode rods are made of magnesium, aluminum, or a combination of these metals. Over time, they naturally break down due to the electrochemical reaction they’re designed to undergo. Depending on your water quality and usage, an anode rod typically lasts anywhere from three to five years. Neglecting to replace it when necessary can lead to the internal deterioration of your water heater, which may eventually result in leaks or total system failure. Replacing the rod is far less costly than replacing the entire water heater, making it a smart preventative measure.

If you suspect your anode rod is worn out, a professional plumber can inspect it by draining a small amount of water from the tank and removing the rod for evaluation. In many cases, homeowners who are handy with tools can do this themselves, but caution is advised due to the high temperatures and pressures involved. Replacing a corroded anode rod before it fully depletes can significantly extend the lifespan of your water heater and maintain the quality of your hot water.

In summary, rusty water from your hot tap is more than just an inconvenience—it’s often a warning sign from your water heater. The anode rod plays a vital role in preventing corrosion inside the tank, and when it fails, the results can be seen (and smelled) in your water. Keeping up with routine maintenance, including checking and replacing the anode rod, is a cost-effective way to ensure your water heater operates efficiently and lasts as long as possible. Don’t ignore rusty water; it might be your water heater’s way of asking for help.