A comprehensive term that covers all processes and equipment used to modify the quality of water for commercial applications, going beyond simple filtration. This includes advanced techniques like Reverse Osmosis, deionization, softening, chemical dosing (e.g., for cooling towers or boilers), and advanced microbial control. These integrated systems are typically tailored to address specific operational needs and regulatory compliance requirements within a commercial facility. The primary aim is to ensure the water used for every process—from drinking and washing to industrial cooling and heating—is of the appropriate quality to maximize efficiency and minimize maintenance costs.