SIIC Environment Holdings Ltd. is a Singapore-based investment holding company. The Company is engaged in wastewater treatment, water supply, sludge treatment, solid waste incineration, and other environment-related businesses. The Water and Sludge Treatment segment includes the construction, management, and operation of water and sludge related infrastructure under service concession arrangements, management and operation of water and sludge related infrastructure under nonservice concession arrangements, and financial income under service concession arrangements. The Water Supply segment includes the construction, management, and operation of water supply-related infrastructure under service concession arrangements. The Waste Incineration segment includes the construction, management, and operation of waste incineration-related infrastructure under service concession arrangements. Its Other operations include design and consulting on projects and the installation of water meters.