Septic Tank Replacement in St. Johns County, FL
Get connected with a licensed septic contractor in St. Johns County. Your quote request goes to one local contractor only — never shared.
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Cost varies by system size, soil conditions, and access. Most St. Johns County homeowners pay within the typical range for this service.
What to Expect with Septic Tank Replacement in St. Johns County
When you need septic tank replacement in St. Johns County, Florida, working with a local contractor who knows the area makes a real difference. Local professionals understand the Interior flatwoods (majority): Myakka fine sand (Florida state soil, Spodosol) dominant — spodic hardpan at 12–40 inches, SHWT 6–18 inches wet season; Immokalee, Leon, Basinger, St. Johns fine sands also present; mound systems standard. Coastal/barrier island: St. Augustine fine sand (SHWT 18–36 inches, tidal influence), Canaveral-Beaches complex, Udipsamments. St. Johns River floodplain (west): Samsula/Hontoon muck — permanently saturated, no onsite septic viable. Interior elevated ridges: Candler, Tavares — deeper water table, conventional systems possible. soil conditions and the permitting process through Florida Department of Health in St. Johns County (DOH-St. Johns), Environmental Health Division. Phone: 904-506-6081. Email: SJCHD.EH@flhealth.gov. Address: 200 San Sebastian View, St. Augustine, FL 32084. Note: St. Johns County has not yet received a firm transition date to FL DEP as of May 2026 — permitting remains at DOH-St. Johns.. That local knowledge affects everything from how long the job takes to how well the repair holds up over time.
A licensed St. Johns County contractor will assess your system before recommending a solution. For most septic tank replacement jobs, the process starts with an inspection of the tank, drain field, and inlet and outlet baffles to confirm the problem and rule out related issues. Getting an accurate diagnosis upfront avoids the situation where a repair is completed only for a second underlying problem to surface shortly after.
Before your appointment, write down what you have noticed — slow drains, odors, wet spots in the yard, or gurgling sounds from plumbing. Note when the symptoms started and whether they are getting worse. That information helps the contractor prepare and often reduces the time spent on site. Ask for a written estimate before any work begins, and confirm whether the quoted price includes permits and inspection fees.
📋 Local Regulation Note
St. Johns County Ordinance 2024-28 (effective July 2024): advanced OSTDS (ATU/aerobic treatment unit) required for ALL new development within 100 feet of the Intracoastal Waterway or St. Johns River not served by centralized sewer — local rule unique to St. Johns County. HB 1379 (effective July 1, 2023): ENR systems required for new OSTDS on lots ≤1 acre within active BMAP for Outstanding Florida Springs (limited applicability in St. Johns County — no major Outstanding Florida Springs within the county; primarily applies to Lower St. Johns River BMAP tributaries). County policy: residents must connect to centralized sewer when it becomes available. Permit fees: new system $875–$1,325 total; repair permit $200–$275. City of St. Augustine proper and most of Nocatee are on municipal sewer.
Frequently Asked Questions — Septic Tank Replacement in St. Johns County
How much does septic tank replacement cost in St. Johns County? ▾
Septic Tank Replacement costs in St. Johns County, Florida vary based on system size, soil conditions, and site access. Get a free quote from a licensed local contractor for an accurate estimate.
Do I need a permit for septic tank replacement in St. Johns County? ▾
In St. Johns County, septic work is regulated by Florida Department of Health in St. Johns County (DOH-St. Johns), Environmental Health Division. Phone: 904-506-6081. Email: SJCHD.EH@flhealth.gov. Address: 200 San Sebastian View, St. Augustine, FL 32084. Note: St. Johns County has not yet received a firm transition date to FL DEP as of May 2026 — permitting remains at DOH-St. Johns.. St. Johns County Ordinance 2024-28 (effective July 2024): advanced OSTDS (ATU/aerobic treatment unit) required for ALL new development within 100 feet of the Intracoastal Waterway or St. Johns River not served by centralized sewer — local rule unique to St. Johns County. HB 1379 (effective July 1, 2023): ENR systems required for new OSTDS on lots ≤1 acre within active BMAP for Outstanding Florida Springs (limited applicability in St. Johns County — no major Outstanding Florida Springs within the county; primarily applies to Lower St. Johns River BMAP tributaries). County policy: residents must connect to centralized sewer when it becomes available. Permit fees: new system $875–$1,325 total; repair permit $200–$275. City of St. Augustine proper and most of Nocatee are on municipal sewer.