S.C. Code Ann. § 20-3-10: Grounds for divorce.

No divorce from the bonds of matrimony shall be granted except upon one or more of the following grounds, to wit:

(1) adultery;

(2) desertion for a period of one year;

(3) physical cruelty;

(4) habitual drunkenness; provided, that this ground shall be construed to include habitual drunkenness caused by the use of any narcotic drug; or

(5) on the application of either party if and when the husband and wife have lived separate and apart without cohabitation for a period of one year. A plea of res judicata or of recrimination with respect to any other provision of this section shall not be a bar to either party obtaining a divorce on this ground.