When people think about data centers, electricity is usually the first resource that comes to mind. After all, thousands of servers, storage systems, and networking devices require massive amounts of power to operate around the clock. However, there is another critical resource that often receives far less attention: water. Water plays a vital role in data center operations. It is used in cooling systems, employee facilities, cafeterias, cleaning operations, and other day-to-day activities. Once used, this water becomes wastewater that cannot simply be discharged into the environment. It must first undergo proper treatment to meet environmental regulations and sustainability standards.