Building operators can ensure proper chemical levels in water-cooled HVAC systems by implementing a regular water treatment program. This program should include regular testing of water chemistry parameters, such as pH, alkalinity, and hardness, as well as the monitoring of corrosion rates and biological growth. Based on the test results, building operators can adjust chemical dosing rates and types to maintain optimal water chemistry conditions. Additionally, building operators should ensure that all chemical treatments are compatible with system materials and components, and that they comply with relevant regulations and guidelines.