How much does a septic permit cost in Charleston County, SC?

Septic permit fees in Charleston County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact SCDES Lowcountry Regional Office at (843) 953-0150 for current fee schedules.

How long does it take to get a septic permit in Charleston County?

The septic permit process in Charleston County generally takes 2–6 weeks, depending on soil evaluation scheduling and application completeness. Soil evaluations must be performed by a licensed soil scientist before applying.

Do I need a soil evaluation for a septic permit in Charleston County?

Yes. Charleston County requires a professional soil evaluation before issuing any septic permit. A licensed soil scientist evaluates soil type, depth, drainage, and water table levels to determine the appropriate septic system design.

Who handles septic inspections in Charleston County, SC?

SCDES Lowcountry Regional Office oversees all septic system inspections in Charleston County. Contact them at (843) 953-0150 to schedule an inspection or ask about requirements.

Can I install my own septic system in Charleston County?

Charleston County requires septic system installation by licensed contractors. All installations must be permitted through SCDES Lowcountry Regional Office and pass inspection before the system can be used.

Septic & well regulations in Charleston County, SC

Charleston County is located in the Lowcountry region of South Carolina. Charleston County has Lowcountry soils dominated by high water tables, tidal influence, and sandy soils over impermeable clay. Barrier islands (Isle of Palms, Sullivan's Island, Folly Beach) have extremely shallow water tables and flood-prone soils. Understanding local permit requirements and soil conditions is essential before installing, repairing, or inspecting a septic system.

Permits & Requirements

New Installation

Site evaluation and septic permit required from SCDES Lowcountry Regional Office before installation. A licensed installer (Tier 1–3) must be retained for construction. Soil evaluation determines system type per R.61-56 standards. Permit fee is $150 with 5-year validity. Charleston County has a sewer connection preference ordinance—properties within sewer service areas may be required to connect rather than install new septic systems.

Repair

Repair permit required from SCDES Lowcountry Regional Office. A licensed contractor must assess the failure and submit a repair plan compliant with R.61-56. Existing system modifications must meet current SCDES standards for separation distances and soil suitability.

Inspection

Voluntary inspections available through SCDES-licensed inspectors. While South Carolina does not mandate point-of-sale inspections, lenders and buyers frequently require them for real estate transactions. Inspection typically costs $250–$500 and covers tank condition, baffles, and drain field evaluation.

Charleston County Environmental Health

SCDES Lowcountry Regional Office

(843) 953-0150

Contact the county environmental health department for permit applications, soil evaluation scheduling, and regulatory questions.

Soil & Terrain Characteristics

Charleston County has Lowcountry soils dominated by high water tables, tidal influence, and sandy soils over impermeable clay. Barrier islands (Isle of Palms, Sullivan's Island, Folly Beach) have extremely shallow water tables and flood-prone soils. Inland areas above the Ashley and Cooper rivers offer slightly better drainage.

County-Specific Considerations

Charleston County has a sewer connection preference ordinance requiring connection to municipal sewer where available. Lawsuits over failing septic systems near the coast have increased regulatory scrutiny. Sea level rise, chronic tidal flooding, and hurricane storm surge create ongoing challenges for existing and new septic installations. Properties on barrier islands and in low-lying peninsular areas frequently require advanced treatment systems or must connect to sewer.

Find Services in Charleston County

Septic Pumping

Charleston County

Septic Inspection

Charleston County

Septic Installation

Charleston County

Well Water Testing

Charleston County

Well Pump Repair

Charleston County

Well Drilling

Charleston County

Emergency Services

Charleston County

Water Treatment

Charleston County

Drain Field Repair

Charleston County

Septic to Sewer Conversion

Charleston County

Aerobic Septic System

Charleston County

Well Water Filtration

Charleston County

PFAS Water Testing

Charleston County

Related Resources

Charleston County Overview Inspection Checklist How to Choose a Septic Company

Septic Permits & Regulations in Charleston County — FAQ

How much does a septic permit cost in Charleston County, SC?: Septic permit fees in Charleston County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact SCDES Lowcountry Regional Office at (843) 953-0150 for current fee schedules.
How long does it take to get a septic permit in Charleston County?: The septic permit process in Charleston County generally takes 2–6 weeks, depending on soil evaluation scheduling and application completeness. Soil evaluations must be performed by a licensed soil scientist before applying.
Do I need a soil evaluation for a septic permit in Charleston County?: Yes. Charleston County requires a professional soil evaluation before issuing any septic permit. A licensed soil scientist evaluates soil type, depth, drainage, and water table levels to determine the appropriate septic system design.
Who handles septic inspections in Charleston County, SC?: SCDES Lowcountry Regional Office oversees all septic system inspections in Charleston County. Contact them at (843) 953-0150 to schedule an inspection or ask about requirements.
Can I install my own septic system in Charleston County?: Charleston County requires septic system installation by licensed contractors. All installations must be permitted through SCDES Lowcountry Regional Office and pass inspection before the system can be used.