Drain Field Replacement & Mound Systems in West Palm Beach, 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.
When Replacement Is the Right Call
Not every failing drain field can be repaired. If the field has failed extensively, or if a perc test shows the native soil can no longer support a standard field, full replacement is the realistic path forward. 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, a mound system, a raised bed of approved sand and gravel built above the natural grade, is the standard solution.
A mound system costs more than a conventional field, but it's what makes septic viable at all on a site that would otherwise fail a standard field's site evaluation.
Signs You Need Full Replacement, Not Just Repair
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 submitted for county permitting.
Installation
The new field or mound system gets built to the approved design.
Final Inspection
The completed system gets inspected and signed off before it's put into use.
Why This Comes Up Here
Palm Beach County is documented as one of the more challenging parts of Florida for conventional drain fields. Water tables here routinely sit just a few feet below the surface across much of the county, which means conventional gravity fields frequently fail site evaluation outright in some areas, and mound systems, low-pressure dosing, or other engineered designs become the default rather than the exception.
Specific Greenacres subdivisions, Sherwood Forest, Pine Country, and Sunland Estates, are documented with a severe septic absorption rating due to this exact water table condition, making mound systems and other engineered solutions particularly common there.
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 where conventional systems are viable. Given this area's water table conditions, full replacement often runs $12,000 to $25,000, reflecting the engineered solutions frequently required here. A mound system specifically typically runs $10,000 to $25,000. A perc test 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 — Sunland Estates, Greenacres
Engineered mound system replacing a conventional field that couldn't handle documented water table conditions
The Problem
A homeowner in the Sunland Estates subdivision, one of the areas documented with a severe septic absorption rating, had a drain field that repair attempts, including a soil rejuvenation treatment, had only temporarily resolved.
The Diagnosis
A new perc test confirmed the native soil and the subdivision's known high water table could no longer support a conventional field long-term. The site needed an engineered solution.
The Fix
The connected contractor designed and installed a mound system, restoring the separation from groundwater the property's soil couldn't provide on its own. The system was permitted and passed final inspection.
Recurrence Prevention
With a system now engineered for the site's documented water table conditions rather than relying on the original conventional design, the homeowner isn't expected to see the same recurring symptoms.
| 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 West Palm Beach Homeowners Call Us
Designed for Your Actual Site
We connect you with pros who design around your specific soil and water table conditions.
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 regularly design and install engineered systems for this county's documented water table challenges.