A DUI is a serious crime in South Carolina and offenders will suffer extensive fines, punishments and requirements. You can be convicted of a DUI in SC if your BAC or blood alcohol concentration (BAC) is .08% or greater. Driving under the influence can be defined as driving while impaired by both drugs and/or alcohol as well as driving both a car or a boat. https://best-dwi-attorneys.net/wp-admin/post-new.php Legal limit in South Carolina: Standard, non-commercial drivers: 0.08% BAC Commercial drivers: 0.04% BAC Drivers under 21: 0.02% BAC