Click here for SD One-Call Homeowner portal. 

Call SD One-Call at 811 (in-state) or (800) 781-7474 (outside of South Dakota) at least 48 hours before you dig for construction or home improvement projects. SD One-Call will help determine if there are any buried utility lines in your yard. The call is free and there is no charge for the utilities to locate their facilities by calling SD One-Call at least 48 hours before you dig. You can avoid costly repair bills that may be charged to you in the event facilities are accidentally cut. Calls to SD One-Call are answered 7 days a week, 24 hours a day.