How much does a septic permit cost in Fairfax County, VA?

Septic permit fees in Fairfax County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact VDH Fairfax Health District at (703) 246-2411 for current fee schedules.

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

The septic permit process in Fairfax 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 Fairfax County?

Yes. Fairfax 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 Fairfax County, VA?

VDH Fairfax Health District oversees all septic system inspections in Fairfax County. Contact them at (703) 246-2411 to schedule an inspection or ask about requirements.

Can I install my own septic system in Fairfax County?

Fairfax County requires septic system installation by licensed contractors. All installations must be permitted through VDH Fairfax Health District and pass inspection before the system can be used.

Septic & well regulations in Fairfax County, VA

Fairfax County is located in the Northern Virginia region of Virginia. Piedmont clay soils of the Glenelg-Elioak-Manor association over deeply weathered crystalline bedrock, heavily disturbed by suburban development. Significant areas of compacted fill soils exist in developed subdivisions. Understanding local permit requirements and soil conditions is essential before installing, repairing, or inspecting a septic system.

Permits & Requirements

New Installation

Site evaluation and construction permit required from VDH Fairfax Health District before installation. A DPOR-licensed installer must be retained for construction. Soil evaluation determines system type per 12VAC5-610 standards. Construction permit fee is approximately $425 with 1-year validity.

Repair

Repair permit required from VDH Fairfax Health District. A DPOR-licensed contractor must assess the failure and submit a repair plan compliant with 12VAC5-610. Repair permit fee is approximately $225.

Inspection

Inspections available through DPOR-licensed operators and soil evaluators. HB 2671 (effective July 2025) requires septic system inspection for property transfers in Virginia. Inspection typically costs $300–$500 and covers tank condition, baffles, and drain field evaluation.

Fairfax County Environmental Health

VDH Fairfax Health District

(703) 246-2411

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

Soil & Terrain Characteristics

Piedmont clay soils of the Glenelg-Elioak-Manor association over deeply weathered crystalline bedrock, heavily disturbed by suburban development. Significant areas of compacted fill soils exist in developed subdivisions. Occoquan Reservoir watershed soils receive heightened environmental scrutiny.

County-Specific Considerations

Fairfax County is Virginia's most populous locality with extensive Fairfax Water and sewer service. However, older neighborhoods and western rural areas still rely on septic systems, and failing systems near the Occoquan Reservoir face strict replacement standards due to drinking water supply protection.

Find Services in Fairfax County

Septic Pumping

Fairfax County

Septic Inspection

Fairfax County

Septic Installation

Fairfax County

Well Water Testing

Fairfax County

Well Pump Repair

Fairfax County

Well Drilling

Fairfax County

Emergency Services

Fairfax County

Water Treatment

Fairfax County

Drain Field Repair

Fairfax County

Septic to Sewer Conversion

Fairfax County

Aerobic Septic System

Fairfax County

Well Water Filtration

Fairfax County

PFAS Water Testing

Fairfax County

Related Resources

Fairfax County Overview Inspection Checklist How to Choose a Septic Company

Septic Permits & Regulations in Fairfax County — FAQ

How much does a septic permit cost in Fairfax County, VA?: Septic permit fees in Fairfax County vary by permit type. New installation permits typically cost $200–$500, while repair permits are usually $100–$300. Contact VDH Fairfax Health District at (703) 246-2411 for current fee schedules.
How long does it take to get a septic permit in Fairfax County?: The septic permit process in Fairfax 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 Fairfax County?: Yes. Fairfax 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 Fairfax County, VA?: VDH Fairfax Health District oversees all septic system inspections in Fairfax County. Contact them at (703) 246-2411 to schedule an inspection or ask about requirements.
Can I install my own septic system in Fairfax County?: Fairfax County requires septic system installation by licensed contractors. All installations must be permitted through VDH Fairfax Health District and pass inspection before the system can be used.