Drain Field Replacement & Mound Systems in Fort Myers, FL
When a drain field can't be repaired or the ground can't support a standard field anymore, we connect you with a licensed local pro who designs the right system for your site.
Signs You Need Full Replacement, Not Just Repair
A perc test on your site fails for a standard conventional field
The drain field has failed extensively, not in one localized area
Repair or rejuvenation attempts haven't resolved the problem
You're building new on a site with a high water table or shallow soil depth
A failed perc test doesn't mean your property can't have a septic system, it usually means it needs an engineered system, most often a mound, rather than a conventional field.
How Drain Field Replacement Works
Perc Test and Site Evaluation
Soil and water table conditions get assessed to determine what type of system your site can actually support.
System Design and Permitting
A conventional field or a mound system gets designed based on the site evaluation, and the design gets submitted for county permitting.
Installation
The new field or mound system gets built to the approved design, sized correctly for your household.
Final Inspection
The completed system gets inspected and signed off before it's put into use.
When Replacement Is the Right Call
Not every failing drain field can be repaired. If the field has failed extensively rather than in one localized spot, or if a perc test shows the native soil can no longer support a standard field, whether from age, prior overuse, or a high water table, full replacement is the realistic path forward. If you're not sure whether your situation calls for repair or replacement, our Drain Field Repair page covers the repair-first options worth ruling out before you get here.
For sites where the ground genuinely can't support a standard field, most often due to a high water table or shallow soil depth, a mound system is the standard solution. A mound system is a raised bed of approved sand and gravel built above the natural grade, engineered to restore the vertical separation from groundwater a standard in-ground field needs and doesn't have room for on that particular site.
A mound system costs more than a conventional field, largely due to the imported sand and gravel volume and the pump equipment required to move effluent uphill into the raised bed, but it's what makes septic viable at all on a site that would otherwise fail a standard field's site evaluation.
Why This Comes Up Here
Florida is genuinely one of the tougher states for drain field longevity, and Fort Myers' combination of flat terrain, fast-saturating sandy soil, and a seasonal water table that climbs close to the surface during the wet season is a real part of why full replacement, not just repair, comes up here more often than it would in denser, drier soil.
Mound systems show up more often on Fort Myers-area properties than homeowners typically expect going in, particularly on sites where the water table sits closer to the surface than a standard field's design requires.
What Drain Field Replacement Typically Costs
A conventional drain field replacement typically runs $5,000 to $20,000, with most projects landing in the $8,000 to $15,000 range. A mound system replacement, required when the native soil or water table won't support a conventional field, typically runs $10,000 to $25,000. A perc test, required before any new or replacement field, runs $500 to $2,000, and the county permit typically runs $250 to $1,000.
These are typical ranges, not a quote. Your actual cost depends on system type, site conditions, and field size.
Example Job — Buckingham, Fort Myers
The Problem
A homeowner in Buckingham had dealt with a struggling drain field for years, with repair attempts, including a soil rejuvenation treatment, providing only temporary relief before symptoms returned.
The Diagnosis
A new perc test showed the native soil, combined with a water table sitting closer to the surface than it had years earlier when the original field was installed, could no longer support a conventional field long-term. The site needed an engineered solution, not another repair attempt.
The Fix
The connected contractor designed and installed a mound system, a raised bed of approved sand and gravel, restoring the separation from groundwater the property's soil could no longer provide on its own. The system was permitted and passed final inspection before being put into use.
Recurrence Prevention
With a system now properly engineered for the site's actual conditions rather than relying on the original conventional design, the homeowner isn't expected to see the same recurring symptoms return. A normal pumping schedule keeps the system running as designed going forward.
Engineered mound system installed after repair attempts couldn't resolve a struggling drain field
| Item | Cost |
|---|---|
| Perc test / site evaluation | $500–$2,000 |
| County permit | $250–$1,000 |
| Mound system installation | $10,000–$25,000 |
| Total | $10,750–$28,000 |
Costs vary by system size and site conditions — this reflects a typical mound system installation and is not a quote. A free estimate from your connected professional will confirm exact pricing for your property.
Why Fort Myers Homeowners Call Us
Designed for Your Actual Site
We connect you with pros who design around your specific soil and water table conditions, not a generic template.
Licensed and Verifiable
Every pro in our network is licensed for this work in Florida. You can check any contractor at myfloridalicense.com before work starts.
Repair Ruled Out First
We connect you with pros who confirm replacement is actually necessary before recommending it.
Mound System Experience
We connect you with pros who design and install engineered systems for sites a conventional field can't support.
Areas We Serve
Fort Myers, Cape Coral, North Fort Myers, Iona, San Carlos Park, Buckingham