South Carolina Grease Trap Regulations
FOG Compliance Overview
South Carolina follows the International Plumbing Code (IPC) as its base plumbing code. The IPC requires grease interceptors for food service establishments and references sizing based on fixture unit counts and flow rates. The state's regulatory authority is the South Carolina Department of Health & Environmental Control (DHEC).
With approximately 10,923 food service establishments statewide, South Carolina has significant FOG compliance needs. Individual cities and municipalities may adopt additional local ordinances that go beyond the state plumbing code, including stricter pumping schedules, permit requirements, and enforcement penalties. Of the 4 cities we cover, 1 require a dedicated FOG permit. 1 city enforces the 25% rule for grease trap pumping.
Need a grease trap in South Carolina?
Our free calculator uses IPC code requirements to recommend the right size for your establishment.
Size My Grease TrapCity Regulations in South Carolina
| City | Pumping Frequency | Permit | 25% Rule |
|---|---|---|---|
| Charleston | Quarterly minimum (at least 4 times per year), or more ... | Required | Yes |
| Columbia | weekly | — | — |
| Greenville | annual | — | — |
| Myrtle Beach | Annual | — | — |
Frequently Asked Questions
What plumbing code does South Carolina follow for grease traps?
South Carolina follows the International Plumbing Code (IPC). The IPC requires grease interceptors for food service establishments and sizes them based on fixture unit counts and flow rates. Individual cities may adopt stricter local ordinances.
How many food service establishments are in South Carolina?
South Carolina has approximately 10,923 food service establishments according to Census Bureau County Business Patterns data. We currently cover detailed FOG regulations for 4 cities in the state.
Do I need a grease trap permit in South Carolina?
Permit requirements vary by city. Of the 4 cities we cover in South Carolina, 1 require a dedicated FOG permit. Check your specific city's requirements below or contact your local wastewater authority.
What size grease trap do I need in South Carolina?
Grease trap sizing in South Carolina depends on your establishment's flow rate, number of fixtures, and local code requirements under the IPC. Use our free sizing calculator for a recommendation tailored to your setup.
Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.