Pipe Corrosion: What Causes It and How to Prevent It

Pipe corrosion costs over $9 billion annually. Rusty pipes damage plumbing systems in homes and businesses, leading to leaks and costly repairs.

Factors like water quality, oxygen levels, and temperature speed up this process. Fixing pipes can be expensive, but it doesn’t have to be inevitable. Choose corrosion-resistant materials, maintain balanced water pH, and schedule regular inspections to catch potential problems early.

Call Tom’s Plumbing and Drain Service, LLC, today for expert corrosion prevention and reliable plumbing solutions!

Take action before it becomes an expensive disaster. Stay ahead of corrosion with Tom’s Plumbing and Drain Service, LLC.

What Is Pipe Corrosion?

Pipe corrosion occurs when metal pipes rust due to reactions with water and the environment, potentially damaging your plumbing and disrupting your water supply. Much like a cut apple turns brown, metal pipes—whether copper or steel—react with oxygen and water over time.

While these pipes can last up to 50 years, they eventually wear thin and leak, leading to discoloration or odd tastes in water. Older galvanized steel pipes may rust internally, often going unnoticed until significant damage has already occurred.

Why It Matters in Plumbing Systems

Pipe corrosion affects water quality and can be expensive to address. Replacing damaged pipes can cost anywhere from a few dollars to tens of thousands. You can reduce the risk by managing water flow speed and keeping hot water below 180°F. Balanced pH levels and the use of calcite filters also help create a less corrosive environment for pipes.

Causes of Pipe Corrosion

Pipe corrosion is a common issue that can lead to expensive repairs. Knowing the causes can help you prevent or address it effectively:

1. Water Flow Speed: Fast-moving water wears down pipes through friction, particularly in older galvanized systems. On the other hand, slow-moving water can lead to mineral buildup, which also causes corrosion. Maintaining a balanced water flow is key to reducing these risks.
2. Pipe Materials: Galvanized steel was commonly used in the past but corrodes once its protective zinc coating wears off. Copper pipes are durable, lasting up to 50 years, but they too can thin and leak over time. Modern materials like PVC and PEX resist corrosion better, though each comes with its own strengths and weaknesses.
3. Electrochemical Reactions: When different metals are used together, such as copper connected to galvanized steel, galvanic corrosion can occur due to electrochemical reactions. This can be minimized with dielectric unions or fittings, which separate the metals and prolong pipe life.
4. Water Composition: Water with a pH below seven can corrode pipes. Hard water, containing calcium and magnesium, leaves deposits that accelerate wear. Water temperatures above 180°F also increase the risk of rust and leaks. Periodic testing can help identify and address these issues.
5. Chemical Interactions: Chemicals in water or the environment, such as iron or sulfur bacteria, can lead to microbial corrosion. This process may be slow but still harmful. Regular water testing can catch these problems early, allowing you to treat the water and protect your pipes.

Preventing Pipe Corrosion

Preventing pipe corrosion not only saves money but also extends the life of your plumbing system.

1. Select Resistant Materials: Use materials like PEX, which resist corrosion better than copper. Galvanized steel pipes, coated with zinc, offer additional protection. Internal coatings like FlexSleeve or fusion-bonded epoxy act as shields against corrosive elements.
2. Conduct Water Testing: Think of water testing as a checkup for your pipes. It identifies issues like high levels of chlorides or sulfates that lead to corrosion, helping you address problems before they escalate.
3. Balance Water pH Levels: Water that is too acidic or too basic can harm your pipes. Keeping the pH near neutral prevents damage. Regular monitoring ensures the levels remain safe, protecting your plumbing system.
4. Install Protective Anodes: Protective anodes are part of a system that uses direct current to prevent corrosion. This is an effective way to safeguard metal pipes and extend their lifespan.
5. Control Water Flow Speed: Adjusting the speed of water flow reduces stress on your pipes. Both high velocity and excessive heat increase corrosion, so managing these factors helps maintain your system.
6. Ground Your Plumbing: Proper grounding prevents stray electrical currents from corroding pipes, especially when different metals are used together. This simple precaution can prevent costly issues.
7. Avoid Harsh Chemicals: Strong chemicals can degrade pipe material over time. Opt for gentler cleaners and treatments to maintain your pipes and support a healthier environment.
8. Use Dielectric Unions: These fittings separate different metals in your plumbing system, preventing reactions that cause galvanic corrosion. They play a big role in preserving pipe integrity.
9. Insulate Exposed Pipes: Pipes exposed to the elements are more susceptible to damage. Insulating them helps regulate temperature and prevents corrosion, much like a protective coat for your pipes.

Keep Your Plumbing System Running Smoothly

Pipe corrosion is more than just rust—it’s a problem that can lead to significant damage if left unchecked. Regular maintenance, careful material choices, and proactive measures like coatings or water treatments can help keep your pipes in great shape.

If something seems off, don’t wait. Quick action can prevent bigger headaches down the line. Contact Tom’s Plumbing and Drain Service, LLC, to keep your plumbing system in top condition. Let’s leave corrosion behind for good!