Septic Installation FAQ for Tallahassee FL
Short, plain answers about septic tank installation, permits, nitrogen-reducing systems and local rules in Leon, Wakulla, Gadsden and Jefferson counties.
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Septic questions answered
What does a septic system do?
Wastewater flows from the house into a buried tank where solids settle. The liquid then moves to a drainfield where soil treats it. A nitrogen-reducing system adds another treatment step.
Do I need a permit to install a septic system in Florida?
Yes. A permit is required before a septic system is built, repaired, modified or abandoned. See the permit guide.
Who issues septic permits in Leon County now?
DEP took over septic permitting in Leon County effective January 2, 2025 (Florida Health). Wakulla, Gadsden and Jefferson counties are on the same list (Florida Health).
What is the Wakulla Springs priority focus area?
It is the part of the springs basin where the state puts the strictest nitrogen rules. Most of Leon County south of Capital Circle is in the protection zone (WCTV).
Which systems count as nitrogen-reducing?
Three types: in-ground nitrogen-reducing biofilters, NSF 245 certified aerobic treatment units, and performance-based treatment systems (FDEP).
When is a nitrogen-reducing system required for a new septic system?
In springs basins, on lots of one acre or less where sewer is not available (FDEP). Confirm your parcel with the state map before you plan.
What if my existing septic system fails in the Wakulla basin?
In Wakulla County, repairs or changes to a septic system in the priority focus area must upgrade to nitrogen-reducing, starting May 1, 2024 (Wakulla County).
How far must a drainfield be from a drinking-water well?
The state's variance records list a 75 foot setback to a private potable well (FDEP summary). Your site plan shows the exact distances.
How much space is needed between the drainfield and the water table?
At least 24 inches between the bottom of the drainfield and the water table at its wettest (rule text).
Why does the site plan keep extra room on the lot?
At least 75 percent of the unobstructed area has to meet the setbacks so the drainfield can be repaired or expanded later (rule text).
Can I connect to sewer instead?
If sewer is available to your lot, ask about it first. Leon County has funded septic-to-sewer projects in southside neighborhoods (Leon County).
Is there money to help with an upgrade?
Leon County offered up to $7,500 per eligible home in the Wakulla Springs priority focus area, funded by a state grant (program packet). Funds are limited, so ask the county what is open now.
What happens to the old tank if I connect to sewer?
It has to be closed out properly, not just left in the ground. See septic abandonment.
Does a septic system cut nitrogen on its own?
Only partly. A conventional tank removes 10 to 50 percent of the nitrogen (UF/IFAS). That is why springs areas ask for more.
Is karst ground a problem for septic?
It can be. Karst lets liquid reach groundwater quickly, so these areas are more vulnerable to pollution (FNAI).
Do I need a building permit too?
For a new home, yes. Leon County's residential permit checklist asks for a septic permit application or a waiver letter in the package (county checklist).
How do I check that my installer is registered?
Florida Health keeps a public list of septic tank contractors (contractor list).
Who is a licensed pro required for?
Installing, repairing, changing or closing a septic system. The work is done by a registered septic contractor under the state permit.
How long does installation take?
The dig is short. Most of the time goes to the site check, the soil readings and the permit. We give a schedule after we see your lot.
How do I get a quote?
Use the contact form or call (850) 750-6657.
Still have a question?
Call or send the form. We will answer about your lot and your address.
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