S.C. Code Ann. § 44-53-1390
When the department is informed of a case of lead poisoning pursuant to Sections 44-53-1360 and 44-53-1380, or otherwise, any authorized representative of the department upon presentation of the appropriate credentials to the householder and with the consent of the householder or his agent may enter and inspect a private dwelling or child care facility at reasonable times and in a reasonable manner for the purpose of ascertaining the presence of lead base substances and may remove samples of objects necessary for laboratory analysis. If the householder refuses admission to the premises, the inspector shall obtain an inspection warrant before he can inspect the premises.
Upon the request of any occupant, the director or his representative shall cause to have the occupant's premises inspected within a reasonable time, not to exceed ten days, unless systematic inspection of the areas in which the person requesting the inspection resides is scheduled within thirty days, in which case the inspection may be deferred up to twenty additional days.