What is a common issue associated with older plumbing systems?

Corrosion and build-up in pipes is a prevalent issue in older plumbing systems. Over time, the materials used in older pipes, such as galvanized steel or iron, can deteriorate due to chemical reactions with water, leading to rust formation and mineral deposits. This corrosion not only weakens the structural integrity of the pipes but also results in reduced water flow rates. The accumulation of build-up can create blockages, which may further exacerbate the issue and lead to increased pressure on the plumbing system. As a result, homeowners with older plumbing systems often experience variable water pressure and diminished performance in fixtures.

In contrast, high-pressure water output is typically a characteristic of newer plumbing systems that are designed to handle the demands of modern households. Excessive water waste may arise due to leaks, but this is not inherently a problem tied to the age of the plumbing system alone. Lastly, modern fixture compatibility may be an issue with older systems that don't meet current standards, but it is not a common physical issue affecting the plumbing's performance like corrosion and build-up.