Does this lot have water and sewer service?
Find which utility's service area the lot falls in, then ask that utility, in writing, whether it will serve the lot, at what capacity, and what connecting will cost. The will-serve or availability letter is the answer; the service-area map is only how you find who to ask. If no utility serves the lot, water means a well and sewer means a septic system, and both are decided by the soil, the water table and the health department rather than by any map.
Reviewed by Spatia's editor on 2026-09-30; sources checked 2026-09-30.
The mistake almost everyone makes
Reading a lot inside a utility's service area as a lot with service. A service-area boundary says which utility has the territory; it does not say a main runs to the lot, that the main has capacity, that the utility will extend it, or what an extension and the connection fees cost, and those can exceed the price of a rural lot. In the other direction, a lot outside every service area is not a dead end: a well and a properly sited septic system serve a large share of rural homes. It means the soils and the health department now decide what you can build, which is a different diligence path with its own tests.
How to check it
Identify the provider, for water and for sewer separately
A city, a county utility or a private company may hold the territory, and the sewer provider is often not the water provider. Florida publishes water service areas; elsewhere the county or the state utility regulator keeps the map. The screen gives you the name; the rest is a phone call and a letter.
Ask for an availability or will-serve letter
Ask for the distance to the nearest main, whether it has capacity, who pays for an extension, the connection and impact fees, and how long the letter is good for. Get it in writing before the contingency ends; a verbal yes is not a commitment.
If there is no sewer, screen the lot for septic
The soil survey's depth to seasonal high water table and its limitations rating for absorption fields tell you what to expect; the county's minimum lot size for a septic system and its setbacks from wells and water tell you whether it fits. In Florida the state environmental agency runs the program and the county issues the permit on a site evaluation. That evaluation, not the survey, decides.
If there is no water, ask about a well
A well needs a permit from the water management district or the health department, and its yield and quality depend on the aquifer under the lot. Ask neighbours what their wells produce and test the water on any well that exists.
Price the connection into the deal
An extension across a neighbour's land needs an easement; a lift station needs power; a septic mound needs fill. Each is a cost that belongs in the offer, and the will-serve letter and the site evaluation are the documents that price it.
What this still does not tell you
- A service-area boundary is not service; only the utility's letter establishes availability, capacity and cost.
- Septic suitability is decided by the health authority on a site evaluation, not by the soil survey.
- It does not estimate extension, connection or impact fees.
- It is not a substitute for a will-serve letter or a site evaluation, and it is not legal or engineering advice.
Who actually decides
- The water and sewer utility for the lot — issues, or declines, the availability or will-serve letter
- Your county environmental health office — issues the septic permit on a site evaluation and permits or registers the well
- Florida DEP — onsite sewage (septic) program
- US EPA — septic systems