S.C. Code Ann. § 5-31-1740: Lien of assessments.

The assessments so laid shall constitute a lien upon the property so assessed which shall be superior to all other liens except the liens for county and State taxes, and payment may be enforced as the payment of city or town taxes is enforced. Such lien shall continue from the date of entry on the "water and sewer assessment liens" book until the expiration of five years from the date when final payment is due and payable, unless sooner paid.