S.C. Code Ann. § 49-17-1050: Land needed but not affected may be condemned.

If it is necessary to acquire a right-of-way or an outlet over and through lands not affected by the drainage and the right-of-way or outlet is not acquired by purchase, the action to secure the condemnation of any right-of-way which is necessary for the proper drainage of any drainage district or any part of it and to fix the compensation is governed by the Eminent Domain Procedure Act (Chapter 2 of Title 28).