Governs the capital city, providing municipal services including waste management, urban planning, street maintenance, and public health.

Provides administrative services including national identity cards, land registration, social benefits, and disaster relief coordination for the Colombo division.

Manages provincial hospitals, public health programs, and medical administration.

Responsible for provincial schools, educational policy, and teacher services in WP.

Oversees local authorities including municipal, urban, and pradeshiya bodies within the Western Province.