Va. Code § 15.2-1200: General powers of counties

Any county may adopt such measures as it deems expedient to secure and promote the health, safety and general welfare of its inhabitants which are not inconsistent with the general laws of the Commonwealth. Such power shall include, but shall not be limited to, the adoption of quarantine regulations affecting both persons and animals, the adoption of necessary regulations to prevent the spread of contagious diseases among persons or animals and the adoption of regulations for the prevention of the pollution of water which is dangerous to the health or lives of persons residing in the county.Code 1950, § 15-8; 1954, c. 529; 1956, cc. 218, 664; 1956, Ex. Sess., c. 40; 1958, c. 279; 1960, c. 606; 1962, c. 623, § 15.1-510; 1997, c. 587.