How Does a Copper Pipe Get a Pinhole?
Pinhole leaks in copper pipes typically occur due to chemical corrosion caused by substances present in the water, with chlorine being a primary factor.
A pinhole leak is a very small opening in a pipe, often appearing as a tiny stream or drip of water. Despite their size, these leaks can cause significant damage over time, leading to mold, structural issues, and high water bills.
The Main Cause: Chemical Corrosion
Based on expert analysis, chemical corrosion is probably the most common cause of pinhole leaks in copper pipes. This corrosive action happens when the water flowing through the pipes contains certain chemicals. These chemicals interact with the copper material, essentially eating away at it.
The process works like this:
- Chemicals in the water come into contact with the inner surface of the copper pipe.
- They react with the copper, causing it to break down and deteriorate over time.
- This deterioration weakens the pipe walls, creating thin spots.
- Eventually, water pressure finds these weak points, resulting in a small hole or "pinhole."
The Impact of Chlorine
Among the various chemicals found in water supplies, chlorine is frequently identified as a major contributor to copper pipe corrosion. Chlorine is added to public water systems as a disinfectant to kill harmful bacteria and ensure water safety. While essential for public health, its presence can accelerate the corrosion process in copper pipes, making it the most common culprit behind pinhole leaks in many areas.
Summary of the Pinhole Leak Process
In essence, a pinhole leak forms when:
- Water containing corrosive chemicals flows through the copper pipe.
- Chemicals, particularly chlorine, react with the copper.
- This reaction causes the copper to deteriorate.
- The pipe wall weakens, forming a pinhole.
Understanding the role of water chemistry, especially the effects of disinfectants like chlorine, is key to comprehending how these frustrating leaks develop.
