Septic pumping in St. Johns County, Florida costs $400-$850 (avg $600). A new septic system installation costs $8,500-$17,000. USDA soil data rates 0% of county soils as suitable for septic absorption fields. Approximately 18,046 homes in this county use septic systems.
Septic System Costs in St. Johns County
| Service | Low | Average | High |
|---|---|---|---|
| Pumping / Cleaning | $400 | $600 | $850 |
| Routine Inspection | $300 | $450 | $650 |
| Real Estate Inspection | $600 | $850 | $1200 |
| Minor Repair | $1,050 | $1,500 | $7,400 |
| Conventional Installation | $8,500 | $12,150 | $17,000 |
| Aerobic System Installation | $15,950 | $22,800 | $31,900 |
| Drainfield Replacement | $8,500 | $12,150 | $17,000 |
| Perc Test | $1,250 | $1,800 | $2,500 |
Cost estimates based on regional market data for St. Johns County, Florida. Actual costs depend on system type, site conditions, and provider.
Soil & Septic Suitability in St. Johns County
Drainage Class
Very poorly drained
Hydrologic Group
A/D
Unique Soil Types
68
Dominant Soil Types
| Soil Series | Coverage | Drainage | Hydro Group |
|---|---|---|---|
| Riviera | 291 | Very poorly drained | A/D |
| St. Augustine | 243 | Somewhat poorly drained | A |
| Myakka | 241 | Very poorly drained | A/D |
| Floridana | 213 | Very poorly drained | C/D |
| Holopaw | 203 | Very poorly drained | A/D |
Septic Tank Absorption Field Suitability
USDA NRCS rates soil suitability for septic absorption fields across this county:
Overall rating: Very limited
Septic Regulations & Permits in St. Johns County
State Regulatory Body
Florida Department of Health
Inspection Required for Home Sale
No / Varies
Nitrogen Reduction Areas
Yes
Advanced Treatment Required
In designated areas
Enhanced Nutrient Reducing OSTDS required in Indian River Lagoon basin. 65% nitrogen reduction mandate by 2030.
Contact the St. Johns County health department for current permit requirements, fees, and approved system types.
Septic System FAQ for St. Johns County
How much does septic pumping cost in St. Johns County?
Septic pumping in St. Johns County, Florida typically costs between $400 and $850, with an average of $600. Costs vary by tank size (1,000-1,500 gallons is typical), ease of access, distance from the pumping company, and how full the tank is. Most homeowners should pump their tank every 3-5 years.
How much does a new septic system cost in St. Johns County?
A conventional septic system installation in St. Johns County typically costs $8,500-$17,000. An aerobic treatment unit (ATU) costs $15,950-$31,900. Given the predominantly very poorly drained soils in this area, some sites may require alternative system types. Costs include the tank, drainfield, permits, and labor.
Do I need a permit for a septic system in St. Johns County?
Yes. Virtually all counties in Florida require a permit before installing, repairing, or replacing a septic system. The permit process typically involves a soil evaluation or percolation test, system design by a licensed professional, application to the county health department, and one or more inspections during installation. Contact the St. Johns County health department for current requirements and fees.
What soil types are in St. Johns County and how do they affect septic systems?
St. Johns County has predominantly Riviera, St. Augustine, Myakka soils. The dominant drainage class is Very poorly drained with hydrologic group A/D. The USDA rates 0% of surveyed soils as "Not Limited" for septic absorption fields, 1.8% as "Somewhat Limited", and 98.2% as "Very Limited".
How often should I pump my septic tank in St. Johns County?
The EPA recommends pumping your septic tank every 3-5 years for a typical household. The exact frequency depends on tank size, household size, and water usage. A 1,000-gallon tank serving a family of 4 should generally be pumped every 3 years. With approximately 18,046 septic systems in St. Johns County, there are many local providers offering regular pumping services.
Can I install a conventional septic system in St. Johns County?
It depends on your specific site. USDA soil data shows that 98.2% of soils in St. Johns County are rated "Very Limited" for septic absorption fields, while only 0% are "Not Limited." This means many properties will require alternative systems such as mound systems, pressure distribution systems, or aerobic treatment units. A percolation test ($1250-$2500) and soil evaluation are required before the county will approve a system design.
How long does a septic system last in St. Johns County?
A well-maintained septic system in St. Johns County typically lasts 25-30 years, though some components may need attention sooner. The concrete septic tank itself can last 40+ years, while the drainfield — the most critical and expensive component — usually lasts 15-25 years depending on soil conditions (St. Johns County has predominantly very poorly drained soils). Regular pumping every 3-5 years and avoiding excess water usage are the two most effective ways to extend system life.
Data last updated: 2026-04-13