What is the purpose of cathodic protection in water systems?

Cathodic protection is a crucial method utilized in water systems to prevent corrosion, which is a significant concern for infrastructure such as pipelines and storage tanks. Corrosion can lead to leaks, contamination of water supply, and structural integrity issues over time.

This method involves the application of a direct current to the metal surfaces exposed to the environment, which effectively reduces the oxidation reaction responsible for corrosion. By polarizing the metal surface, cathodic protection creates an environment where the metal does not corrode as easily or at all. This extends the lifespan of the system components and ensures the water remains clean and safe for consumption.

The choices related to filtration, flow rates, and chemical usage do not directly pertain to the main objective of cathodic protection, which is specifically aimed at the prevention of corrosion, thereby preserving the functionality and safety of water systems.