1. The assessment of property for taxation and the preparation of the tax books;

2. The collection of taxes, fees and other revenues of the county;

3. The custody of and accounting for all public funds belonging to the county;

4. The procurement of goods, services, insurance and construction for the county;

5. The care of all county buildings;

6. The care and custody of all personal property of the county;

7. The construction and maintenance of county roads and bridges;

8. The administration of social service activities;

9. Public health work;

10. Such other activities of the county not specifically assigned to another officer or agency by this form of county organization and government or by other law.