Water treatment companies in Singapore are specialized firms that provide solutions for treating and managing water to ensure it is safe for consumption and use. These companies offer a range of services, including water purification, wastewater treatment, and desalination. They utilize advanced technologies and processes to remove contaminants, improve water quality, and ensure sustainable water management. Notable companies in this sector include Hyflux, SUEZ, and PUB (Public Utilities Board), which play a crucial role in maintaining Singapore's water security and quality standards.