Septic to Sewer Conversion in Southwest Florida

Who is converting right now

Septic to sewer work in this region isn’t one program. Each utility runs its own project, sets its own deadlines and picks its own type of sewer. Where you live decides almost everything about the job.

Cape Coral is the biggest. The city’s Utilities Extension Project (UEP) has been working through the north end of the city for years. North 2 construction is finished, North 1 is under construction, North 3 is in design and North 5 and North 6 are being studied. Cape Coral installs a gravity system with lift stations, and the city brings water, sewer and, in many areas, irrigation water at the same time.

FGUA (the Florida Governmental Utility Authority) serves parts of Lehigh Acres and North Fort Myers. In 2023 the state awarded grant money for two FGUA projects that together convert about 600 septic tanks, roughly 300 in each service area. The North Fort Myers project’s state funding request lists construction from mid-2026 into mid-2027. These are targeted neighborhood projects, not a full sweep of either community, so plenty of homes in both areas will stay on septic for a while.

Charlotte County Utilities has septic to sewer areas around Port Charlotte, including vacuum sewer projects in East and West Spring Lake, El Jobean and Ackerman. The county also uses low-pressure and gravity sewer depending on location, and owners don’t get to choose.

Marco Island already did this. The city ran an island-wide septic tank replacement program in the late 2000s, broken into sewer districts, so most of the island has been on central sewer since then.

What Florida law says about connection deadlines

The statewide rule is Florida Statutes section 381.00655. It covers a properly working septic system on a property where a public or investor-owned sewer becomes available. The utility has to give you written notice at least one year before service is expected, and you then have 365 days after written notice that sewer is actually available to connect.

A septic system that’s failing or needs repair is treated differently. If the Department of Health notifies you that your system needs repair or modification and sewer is available, the clock is 90 days, with one possible 90-day hardship extension.

The statute also lets owners pay amortized connection charges in monthly installments over up to two years from the first notice, and it lets local governments offer longer no-interest installment plans for hardship cases on investor-owned systems.

Local deadlines can be shorter

Don’t assume you have a full year. Cape Coral’s UEP rules require developed lots next to new lines to connect within 180 days of the city’s Notice of Availability. Charlotte County sends a certified letter once the line is certified for use and gives 365 days to pay fees and connect, after which the monthly base charge starts and the county can pursue liens and code enforcement. Read your own notice. The date on that letter is the one that matters.

Gravity, low-pressure, grinder and vacuum systems

The type of sewer the utility builds changes what happens on your side of the property line more than anything else.

Gravity sewer

The utility lays mains deep enough that sewage flows downhill to manholes and lift stations. You get a lateral stubbed to the property line, usually with a cleanout or marker, and a plumber runs a new building sewer from your house to that stub. No pump at your house, no power needed. This is what Cape Coral’s UEP uses, and Charlotte County uses it in some areas. On a gravity job the plumbing work is the biggest piece for the homeowner.

Low-pressure sewer (effluent or grinder pump)

Where the ground is flat and the water table is high, utilities often run small pressure mains in shallow trenches. Each home gets a tank or basin with a pump that pushes wastewater into the main. Some systems use a grinder pump that chops solids, others use an interceptor tank where solids settle and a small effluent pump sends liquid out. Charlotte County’s low-pressure system is the second kind: an interceptor tank, a sump chamber with an effluent pump and a control panel. The county maintains the system from that tank to the plant. The owner has to hire an electrician to install the panel and a dedicated breaker to county standard, and the county schedules the hookup only after that passes inspection.

Vacuum sewer

A central vacuum station pulls sewage through the mains. Charlotte County says one station can serve up to 1,900 homes. In the county’s vacuum areas, the assessment covers the physical connection and the septic abandonment, so owners there generally don’t need to hire a plumber for the hookup itself.

If you end up with a pump on your lot and a power outage stops it, the house drains fill the basin and then back up. Ask your utility how much reserve the tank holds, and go easy on water use when the power is out. We service the private-side pumps that sometimes come with these setups; our sump and sewage ejector pump page covers that work.

The private-side work, step by step

On a gravity connection, here’s what a plumber actually does between your house and the utility’s stub.

• Find where the house drain leaves the slab. On most Southwest Florida ranch homes it exits toward the septic tank, which is often in the front or side yard.
• Cut the drain loose from the tank inlet and route a new building sewer to the utility’s lateral at the property line.
• Install a two-way cleanout near the house. Cape Coral’s hookup instructions call for an accessible two-way cleanout at least 18 inches from the building and another every 80 feet.
• Use 4-inch pipe with at least 1/8 inch of fall per foot and no bends sharper than 45 degrees. Cape Coral specifies non-pressure PVC sewer pipe to ASTM D 3034 (SDR 35 or PS 50), markings facing up.
• Replace the electronic marker at the connection to the city lateral, test the line and leave the trench open until the inspector signs off.
• Backfill with clean fill, restore the swale and repair any damage to city infrastructure before the permit can close.

Those numbers are Cape Coral’s. FGUA and Charlotte County have their own specs and inspections, but the logic is the same: proper slope, accessible cleanouts, a tested joint at the stub.

Before we start, we like to put a camera down the existing house drain. Many homes built in the 1970s and 1980s here have cast iron under the slab, and connecting a new PVC line to a collapsing old one just moves the problem. Our sewer camera inspection shows what’s under there, and if the old drain or a section of yard line is bad, sewer line repair can be done in the same trench.

Permits and inspections

Expect two separate approvals: one for the sewer hookup and one for abandoning the septic tank.

In Cape Coral a single utility hookup permit covers both water and sewer, and either the plumber or the homeowner can pull it. Dual water (irrigation) inspections can be on that permit or a separate one. The installer is named on the permit, a notarized gravity test affidavit goes to Customer Billing Services, and the city inspects before the trench is closed.

For Charlotte County gravity connections, the county asks the owner to hire a plumber to connect the house and abandon the septic system, then provide the septic tank abandonment permit number to Utilities. On low-pressure jobs the electrical inspection comes first, and the county notes scheduling the connection after that can take six weeks or more.

Abandonment is permitted through the county health department, which is the next section.

Septic tank abandonment

Florida’s rule on abandonment is Florida Administrative Code 62-6.011. Once the house is on sewer, the old system has to be abandoned within 90 days and can’t be used for anything else unless the department approves a specific reuse.

The process in Lee County, through the Florida Department of Health in Lee County, looks like this:

• Apply for the abandonment permit (online or by email to the county environmental health office).
• Have a licensed septage hauler pump the tank. Put a copy of the pump-out receipt on the permit board in a plastic bag.
• Break the tank so it can’t hold water, by punching out the bottom or collapsing the walls.
• Fill the hole with clean sand or other suitable fill, then grade and stake the tank location.
• Email the pump-out receipt and tell the office the abandonment is ready for inspection.

The homeowner can do the crushing if they live in the house, or a licensed septic contractor or plumbing contractor can. In Cape Coral the pump-out and demolition are usually part of the plumber’s connection contract. In Charlotte County’s low-pressure and vacuum areas, the county’s connection fees or assessment cover abandonment, so the owner’s role is smaller.

The drainfield usually stays in the ground. It’s the tank that has to be emptied, breached and filled, because an open void under a yard is a collapse hazard.

Keeping your well for irrigation

Many homes that are converting from septic also have a private well, especially in Lehigh Acres, North Fort Myers and the parts of Cape Coral where city water is arriving with sewer. Connecting to central sewer doesn’t automatically mean losing the well.

In Cape Coral, wells can stay in place. Whether you can keep using one for irrigation depends on your UEP area, and connecting to city irrigation water may be optional. If you do switch the sprinklers to city irrigation water, the irrigation system has to be disconnected from the well piping first, and the city is clear that no cross connection is allowed between potable water and any non-potable source.

That last rule is where we see problems. A lot of older homes have the well tied into a hose bib, a pool fill or even part of the house plumbing. When city water comes in, every one of those ties has to be found and cut so the well only feeds the irrigation. If you’re keeping the well, it’s a good time to have the well pump and pressure tank checked, since you’ll be relying on it for the lawn only and a failing pump can short-cycle quietly for months.

Septic to sewer by area

A quick reference for the areas we serve. Projects move, so confirm your street with the utility before planning anything.

For local detail, see our guides to the Cape Coral UEP sewer and water hookup and wells, septic and sewer in Lehigh Acres, or our pages for Port Charlotte and North Fort Myers.

Timeline from notice to final inspection

• Advance notice. Under state law the utility tells you at least a year ahead that service is coming. This is when to start budgeting and asking about assessments and financing.
• Construction in the street. Mains, lift stations or vacuum lines go in. The utility stubs a lateral to your property line.
• Notice of availability. The connection clock starts. In Cape Coral that’s 180 days; under the statute and in Charlotte County, 365.
• Pay utility fees and pull permits. Hookup permit plus the septic abandonment permit.
• Camera the house drain. Find the exit point and condition of the old line before trenching.
• Install the building sewer and cleanouts. Test, inspect, backfill.
• Abandon the tank within 90 days of going live on sewer: pump, breach, fill, inspect.
• Sort out the well and irrigation if water service came in at the same time.

Most of the waiting is on scheduling and inspections. The trench work itself on a typical single-family lot is short, but the window between notice and deadline fills up fast when a whole neighborhood gets letters the same month.

Homeowner checklist

• Read your notice and write down the exact connection deadline. Local rules can beat the state’s 365 days.
• Find out your system type: gravity, low-pressure or vacuum. That decides whether you need a plumber, an electrician or neither for the hookup.
• Ask the utility about payment plans, assessments and any income-qualified grants.
• Locate your septic tank lid and note where the house drain exits.
• List anything tied to the well: hose bibs, pool fill, outdoor showers, any interior fixtures.
• Get a camera inspection of the house drain if the home is older or has slow drains.
• Confirm who’s pulling the hookup permit and who’s handling the abandonment permit.
• Keep the pump-out receipt and the final inspection records with your house papers. Buyers and insurers ask.

How we handle conversions

We do the private-side work: the building sewer from the house to the utility stub, cleanouts, the hookup permit and inspection, and coordination of the tank pump-out and abandonment. When the old drain under the house is the weak link, we repair it in the same job instead of tying new pipe into old failures. We also separate wells from potable plumbing so the cross-connection inspection passes.

Our office is open Monday to Friday, 8am to 5pm, and we serve Lee, Charlotte and Collier Counties. Call (239) 518-4198 or use our request form with a photo of your utility notice and we’ll tell you what your connection involves.