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Florida Drainfield Replacement Cost Guide

By the Marion County Septic Editorial Team Reviewed June 2026

Septic costs in Florida swing widely because soil, system type, and springs rules drive the price more than anything else. This guide collects typical ranges from industry and authoritative sources and explains the factors that move them, including the things national directories tend to leave out. These are typical ranges for context, not a quote.

Typical Florida cost ranges

ProjectTypical range (Florida)
New conventional system (tank and drainfield)$5,000 to $20,000
Drainfield replacement (conventional)$5,000 to $15,000+
Aerobic treatment unit (ATU)$10,000 to $20,000
Advanced ENR system (springs / BMAP areas)about $15,000 to $35,000
Mound or engineered system (high water table)about $15,000 to $35,000
Real-estate septic inspection$250 to $500
Routine tank pumping (for context)$250 to $600
 Typical ranges compiled from HomeGuide, Angi, HomeAdvisor, and Florida-specific sources. Your project may fall outside these ranges.

The costs people forget

The headline number is rarely the whole story. These add-ons are common in Florida, especially on rural or constrained lots:

Add-onTypical range
Percolation / soil test (private)$750 to $1,900
Engineering / system design$500 to $5,000
Tank pump-out before replacement$250 to $600
Yard and landscape restoration$1,000 to $4,500
Tree or obstacle removal$200 to $2,000 per tree
Lift / pump station (low-lying lots)$3,000 to $5,000
ATU or ENR annual maintenance$200 to $1,500 per year
 Add-on ranges from Florida contractor and industry sources. Government permit and site-evaluation fees are separate.

Permit and site-evaluation fees

Government fees are separate from the contractor cost. Florida law sets fee ranges in Section 381.0066, Florida Statutes (for example, roughly $25 to $125 for permit issuance or a system inspection and $40 to $115 for a site evaluation), and the exact current amounts are set by FDEP. Because Marion County moved to FDEP on July 1, 2025, confirm current fees as described in our Marion County permit guide.

What drives the price up or down in Marion County

Pushes cost up:

  • A high seasonal water table, which can require a mound or other engineered system.
  • A springs Priority Focus Area that requires an advanced ENR system.
  • Restrictive soils, karst features, or difficult lot access.
  • More bedrooms, which means a larger system and drainfield.

Pushes cost down:

  • Sandy, well-drained soil, common on the Ocala uplands.
  • An accessible lot with room to work.
  • A smaller home with fewer bedrooms.
  • Replacing only the drainfield when the tank is still sound.
  • County grant programs, where available, for advanced-treatment upgrades.

Getting an actual number

A real price comes from a licensed contractor after a site evaluation, because the soil and the rules for your specific parcel decide the system. Whether you need a drainfield replacement or a new system, tell us about your property and we connect you with a licensed local contractor for a free, no-obligation quote.

Sources and where to verify

Ready to get matched with a licensed contractor?

Tell us about your project and get a free, no-obligation quote from a licensed local septic contractor.

Get a free quote Call (352) 555-0100

Frequently asked questions

How much does a new septic system cost in Marion County?

Industry sources put a new conventional system in Florida in the range of about $5,000 to $20,000, with the final number driven by soil conditions, the number of bedrooms, lot access, and whether springs rules require an advanced nutrient-reducing system. A licensed contractor provides the actual price after a site evaluation.

Why can a drainfield replacement be so expensive?

A full drainfield replacement involves permitting, a site evaluation, removing the failed field, and installing a properly sized new one, often with restoration afterward. Florida sources commonly cite roughly $5,000 to $15,000 or more for a conventional replacement, higher if the site needs an engineered or advanced system.

Does an advanced ENR system really cost more?

Yes. Florida cost sources put the ENR premium at roughly $8,000 to $20,000 above a conventional system, with annual maintenance often around $800 to $1,500 per year. The systems are required in certain spring-protection areas. Some Florida counties offer upgrade grants. See our springs and BMAP guide for where the rules apply.

Can Marion County Septic give me a price?

No. We are a free matching service, not a contractor, so we do not quote or perform work. Tell us about your property using the quote form and we connect you with a licensed local contractor who provides a free, no-obligation quote after evaluating your site.

What raises or lowers the cost the most?

A high seasonal water table (which can require a mound or engineered system), restrictive soils, a springs Priority Focus Area that requires an ENR system, tight lot access, and more bedrooms all push cost up. Sandy, well-drained soil, an accessible lot, a smaller home, and replacing only the drainfield push cost down.