The department is responsible for the implementation of policies, rules, regulations and Council bye-laws on conservation and sustainable exploitation of natural resources and proper sanitation and environmental management. Its key functions include to: 

• Provide technical advice on natural resources conservation and utilization. Initiate and advise Council on natural resources bye laws and ordinances. 
• Offer technical support and extension services to the community and private sector on natural resources.
• Appraise development plans and technical proposals in regard to environmental impact assessment. 
• Carry out research, generate information and data on natural resources. 
• Plan, implement and monitor programs & projects for ensuring a clean City and improving the ambience through sustainable management of solid waste, water, sewerage and sanitation facilities, parks and cemeteries. 
• Maintain a clean, habitable and sustainable City environment. Undertake publicity and promotional activities for natural resource protection and sustainable use. Enforce proper methods for disposal of refuse and waste.