S.C. Code Ann. § 49-4-50: Reports of quantity of water withdrawn; methods for determining quantity.

(A) Each permitted or registered surface water withdrawer must file a report with the department of the quantity of water withdrawn by that surface water withdrawer annually before February first, on forms furnished by the department.

(B) The quantity of surface water withdrawn must be determined by one of the following:

(1) flow meters accurate to within ten percent of calibration;

(2) the rated capacity of the pump in conjunction with the use of an hour meter, electric meter, or log;

(3) the rated capacity of the cooling systems;

(4) any standard or method employed by the United States Geological Survey in determining these quantities;

(5) any other method found to provide reliable water withdrawal data approved by the department.

(C) Permitted and registered surface water withdrawers who are required to file a surface water withdrawal report pursuant to subsection (A) are not required to submit the report if the monthly quantity withdrawn from each intake is being reported to the department as a result of another environmental program reporting requirement, permit condition, or consent agreement.