The main functions of the public Health Services are prevention of diseases and promotion of health.
public Health Services in Kalutara district consists of a health units,which is the key unit for management of all preventive health activities. These units are called Medical officer of Health Areas( MOH Areas) which are expected to be one per Division Secretary Area.

Functions carried out by a MOH Office

Reproductive Health (Preconception,Maternal, Family Planning)
Infant and Child Health
Immunization
Well women services
Adolescent health
School health
Elderly care
Surveillance and prevention of control of communicable diseases
Prevention of Non communicable diseases
Environment sanitation
Food Hygiene
Inspection of building constructions in relevant health
Occupational Health and Disaster Management
Co-ordination of development project between the divisional secretariat and the local authorities.