The Dangers of Pipe Corrosion: Spotting Early Signs

You probably don't think about your pipes unless something goes wrong, but corrosion works behind the scenes, slowly wearing down your plumbing long before a leak or a rupture happens. Rusty water, low pressure, and odd smells are all subtle signs that something might be off. If left unchecked, corrosion can lead to costly water damage and the need for otherwise unnecessary plumbing repairs.

What Causes Pipe Corrosion

Pipe corrosion begins when water reacts with the material of the pipe, gradually wearing it down. Metal pipes, particularly galvanized steel and copper, are more susceptible to this type of damage. If your water has a low pH or contains high levels of dissolved oxygen, it can speed up the process by breaking down the inner surface of the pipes. Dissolved oxygen is more common in water that is aerated, such as well water or water that flows through pipes under high pressure.

Corrosion can also start on the outside of pipes, especially in damp or poorly ventilated areas. Another cause is contact between different types of metal. When dissimilar metals touch, it can create a mild electrical charge that leads to galvanic corrosion. In this reaction, one metal corrodes faster than it normally would, weakening the pipe at the connection point. Homes with older or mixed-metal plumbing systems are especially at risk for this type of corrosion.

Discoloration and Strange Smells

Before a leak appears, one of the first signs of pipe corrosion is discolored water. This often shows up when you first turn on the tap in the morning or after water has been sitting in the pipes for several hours. If corrosion is occurring, small flakes of rust or metal can settle inside the pipes and then flush out when water begins to flow. This creates water that may look brown, yellow, or even orange.

Along with discoloration, you might notice a faint metallic taste or a musty smell. These changes can develop gradually, making them easy to overlook. However, any shift in your water's appearance or smell should prompt a closer look. While discoloration does not always indicate harmful contamination, it does suggest that the interior of your plumbing system may be deteriorating. It's a warning sign that should not be ignored, as it could point to a larger problem developing behind the walls.

Slow Leaks

When corrosion sets in, it doesn't just affect the plumbing itself. As the metal wears away, the pipe walls become thinner and more vulnerable to leaks. Even a small pinhole can let water escape, and what seems like a minor issue can cause serious damage over time. Slow leaks may go unnoticed while water soaks into drywall, warps flooring, or creates damp areas that encourage mold growth.

Leaks hidden inside walls, beneath cabinets, or behind appliances often remain undetected until you notice signs of rot. Additionally, moisture near electrical wiring can create a fire hazard. This is why it is so important to schedule yearly plumbing inspections. Our plumber will thoroughly inspect your system to identify issues before they damage your home or cause an unsafe situation.

Low Water Pressure

A noticeable drop in water pressure usually signals an underlying issue. If your shower feels weaker than before or your sinks take longer to fill, corrosion inside the pipes may be reducing water flow. Over time, mineral deposits and rust from corrosion can build up along the inner walls of the pipes, gradually narrowing the opening and restricting the movement of water. This problem is especially common in older galvanized plumbing systems. The effects often show up first in areas farthest from the main supply line or on upper floors, where pressure is naturally a bit lower. Because these changes happen slowly, they can be easy to dismiss. However, low water pressure combined with other signs, such as discoloration or leaks, is a strong indicator that corrosion is affecting the system. If the pressure drops in just one fixture, the issue may be localized. If the entire home is affected, it is more likely that corrosion has spread through multiple sections of your plumbing.

How Inspections Help Catch Damage Early

The best time to address a corrosion problem is before it leads to a pipe failure. While you can't always see the condition of your plumbing, professionals can. With specialized tools, such as video cameras and pressure testing equipment, a technician can evaluate the health of your pipes without the need for invasive procedures like tearing up walls or floors. These inspections provide a clear picture of where the metal has thinned or where buildup has accumulated. They also help differentiate between a minor issue that can be resolved easily and a more serious problem requiring major repairs. If you've already noticed signs such as low water pressure, staining, or leaks, an inspection can reveal the extent of the damage and help you plan the necessary steps to prevent further issues.

Repair or Replace: What Makes the Most Sense

When corrosion occurs, homeowners typically face two main options: repairing the damaged section or replacing the entire system. If the corrosion is confined to a small area, it may make sense to simply cut out the affected pipe and replace it with a new segment that matches your existing plumbing. However, if the problem continues to appear in different areas, constant repairs can start to feel like a never-ending cycle. In such cases, repiping may be a more practical solution. Replacing older pipes with newer materials, such as PEX, offers a fresh start for your plumbing system. PEX, or cross-linked polyethylene, is a flexible and durable material that resists corrosion and scaling, making it an excellent choice for modern plumbing systems. It can save you from the ongoing hassle of repairs, potential water damage, and the worry that another section of pipe will fail soon after the last fix. The right choice depends on the extent of the damage and the current state of your plumbing.

Prevention Starts With Water Quality

If your water is too acidic or contains high levels of minerals, corrosion can progress faster. A simple water test can determine whether pH levels or water hardness are affecting your pipes. A filtration system or water softener can make a significant difference in improving your water quality. These systems not only protect your appliances but also help extend the lifespan of your plumbing by stabilizing the water that flows through them. By installing the right water treatment system, you can prevent buildup, reduce wear, and slow down the corrosion of metal pipes. This proactive approach is especially beneficial in areas with hard water or if you get your water from a well. It also safeguards pipes by reducing scaling, which can lead to clogs. Regular testing and treatment are essential to preventing plumbing problems and to ensure your water is safe to drink.

Contact Your Local Plumbing Experts

At Benjamin Franklin Plumbing®, we've proudly served the residents of Ramsey, MN, and the surrounding areas for years. Our expert plumbers are here to inspect your plumbing system and identify potential issues before they escalate into costly repairs. Whether it's performing quality repairs or even repiping your home, you can rely on us for efficient and effective solutions. Contact us today to schedule an appointment with one of our experienced plumbers.