Copper pipes are a staple in plumbing systems due to their durability and resistance to corrosion. However, under certain conditions, corrosion can still occur, leading to leaks, water damage, and costly repairs.
Understanding the causes and signs of copper pipe corrosion can help you address issues before they become significant problems.
Causes of Copper Pipe Corrosion
Several factors can contribute to the corrosion of copper pipes. One common cause is water chemistry. According to Sage Water, high levels of acidity in water, also known as low pH, can wear away the protective oxide layer on the surface of the copper pipe, exposing it to further damage. Additionally, high levels of dissolved oxygen, chlorine or hydrogen sulphide in the water can also accelerate corrosion.
Another cause of corrosion is the velocity of water within the pipes. If water flows through copper pipes too quickly, it can create turbulence that wears down the inner surface of the pipe.
Signs of Copper Pipe Corrosion
Spotting the early signs of corrosion can prevent more serious damage. One key indicator is discoloured water. If your tap water has a blue or greenish tint, it could be a sign that copper is leaching into your water supply due to corrosion.
Another sign is frequent pinhole leaks. These tiny holes in the pipe occur when corrosion eats through the copper, leading to small but persistent leaks.
If you notice any of these signs, then it is important to seek advice from a professional who specialises in copper pipes. Taking early action can help prevent the need for extensive repairs.
Preventing copper pipe corrosion can also involve maintaining balanced water chemistry and ensuring proper installation practices. Using water with a neutral pH (neither too acidic nor too alkaline) can help preserve the copper’s protective layer.
Installing water pressure regulators can prevent excessive flow rates that may erode the pipes. Regular system inspections and adding corrosion inhibitors where needed can also extend the lifespan of copper piping, reducing the risk of leaks and costly repairs over time.