Does Old Copper Pipe Cause Water Pressure Problems?

There is a common misconception that copper pipes, especially older ones, are prone to causing water pressure issues. However, this is not entirely accurate. Let's debunk some myths surrounding copper pipes and water pressure:

Understanding Copper Pipes

Copper pipes are highly effective and durable when installed and maintained properly. They have been used for thousands of years and continue to be widely used in modern plumbing systems due to their numerous advantages. Some of the key benefits of copper pipes include their excellent resistance to rust and corrosion, excellent thermal conductivity, and high reliability.

The Truth About Pressure-Related Issues

While copper pipes can indeed have pressure-related problems if the water pressure exceeds a certain limit, this is generally rare in household settings. Soft solder joints in copper pipes can begin to fail if the pressure is exceptionally high, typically exceeding approximately 400 psi (pounds per square inch). However, it is important to note that no water company supplies water at this high pressure to end users. Standard household water pressure ranges from 40 psi to 80 psi, which is well within the safe range for copper pipes.

Aging Copper Pipes: Not a Significant Cause of Pressure Problems

Age itself is not the primary cause of pressure problems in copper pipes. Factors such as the initial design and sizing of the piping system, the quality of the installation, and the presence of internal buildup of deposits are more significant contributors. Copper supply lines have become the standard in the 1970s, but they have been used for much longer. In fact, there are numerous examples of copper pressure lines that are over a hundred years old and still leak-free.

Common Diagnostics and Solutions

If you are experiencing pressure issues with your copper pipes, it is important to conduct a thorough inspection. Check the pressure at the service connection and at different points along the service routing. Incorrect sizing of the piping and inadequate planning for the entire distance of the system are often the real culprits behind pressure-related problems. Regular maintenance and proper sizing can help prevent such issues.

Corrosion and Water Leakage

While age does not necessarily lead to pressure problems, it can be a contributing factor to corrosion, which in turn can lead to water leakage. Over time, exposure to water, minerals, and other elements can cause the copper to deteriorate, resulting in leaks.

Conclusion

Copper pipes are reliable and durable, and they do not inherently cause pressure problems unless subjected to extreme conditions. Regular maintenance and proper installation are key to ensuring that your copper pipes continue to function effectively. Understanding the myths surrounding copper pipes can help you make informed decisions about your plumbing system.