Corroded water systems cause a number of issues that lead to system failure.

It is almost impossible to prevent corrosion completely due to the natural chemical reactions between the pipe work and the environment, but there several things that can be done to help prevent it.

Corrosion in pipework is simply a deterioration of the pipe’s surface. The most notable type of corrosion is metal rusting where iron oxide is produced in response to a reaction between oxygen and water. The oxide weakens the bonds of the metal, resulting in a brittle and crumbly structure.

5 ways to help prevent corrosion

1. Pre-commission cleaning

The time between a new installation of pipework and its first use i.e. comission is a critical period. At this stage, cleaning the system will significantly increase its safety and longevity in the long run. This is because component like valves can be cleaned before they are put into their set positions, and any debris or dirt left in the pipework during the installation process can be fully removed.

2. Use of Corrosion Inhibitors

A number of water treatment solutions are available to help in the prevention and treatment of corrosion within water systems, including both biological and chemical treatments.

Any metal exposed to corrosive bacteria becomes prone to MIC (Microbiologically Induced Corrosion). Adding chemicals like phosphates, silicates, or nitrites can form a protective layer on metal surfaces, reducing the likelihood of corrosion.

3. Monitor pH Levels

Maintaining the water’s pH within an optimal range (typically 7.0 to 9.0) can reduce the corrosivity of the water. Neutral or slightly alkaline pH levels are less likely to cause corrosion.

4. Frequent Water Sampling

Particularly in copper pipes, water is a major cause of corrosion whereby low PH levels damage pipe lining. Frequent water sampling and testing will let you know if there are any irregularities in your water.

5. Pipework Material

Knowing what materials the pipes are made from and the quality of the water flowing through them is the first step in understanding how to prevent corrosion in water systems.

Each and every system is unique, and the control methods you choose will depend on many different factors; from pipework material, structure and extent of risk.

Due to the complexity of this task, it is recommended that you work with a specialist who has the industry knowledge to carry out a professional analysis.