True or False: Methods of fighting corrosion include pH adjustment, orthophosphates, and poly-pigs.

The statement is false as it implies that the methods listed are not effective methods for fighting corrosion in water systems. In reality, pH adjustment, the use of orthophosphates, and poly-pigs are legitimate strategies employed to mitigate corrosion.

Adjusting the pH of water can significantly impact the corrosiveness of the water. Water that is too acidic can lead to increased corrosion rates, so maintaining the right pH can help protect pipes and infrastructure. Orthophosphates are used to form a protective layer on metal surfaces, thereby reducing corrosion. Poly-pigs, or pipeline pigs, are tools used to clean and inspect pipes, but they can also help in preventing corrosion by removing debris that might cause localized corrosion.

The provided answer is not highlighting these valid methods, which are widely recognized practices in water treatment and corrosion management. Thus, the understanding of corrosion control methods is crucial for water operators to ensure the longevity of water infrastructure.