Florida water and wastewater

Find the record first. Then test whether your project can actually use it.

Existing septic/well records can explain what happened on a developed property. Vacant-land feasibility is a different question: the proposed system, setbacks, water source, soils and current permitting authority still need to be verified.

Record workflow

Use four evidence layers in order.

  1. 01

    Screen FLWMI and statewide onsite-sewage data

    Florida DEP describes FLWMI as a statewide inventory of drinking-water source and wastewater method for developed properties, but also states that the data has gaps.

  2. 02

    Open the parcel and local permit file

    Look for septic construction/final approvals, repairs, abandonment, site plans, well permits/logs, contractor records and dates.

  3. 03

    Identify the correct water management district

    Florida has five WMDs. DEP delegates water-well permitting/construction program implementation to the appropriate WMD or delegated permitting authority.

  4. 04

    Treat new-site feasibility as a new decision

    A nearby well or an old septic record does not prove a new home can obtain the same depth, yield, water quality, system type or approved drainfield.

What each record proves

Do not give historical records more weight than they deserve.

EvidenceUseful forDoes not prove
FLWMI map/dataScreening water source and wastewater method on developed propertiesCompleteness, current serviceability or vacant-land approval
Existing septic permit/final approvalPrior system design, location and permit historyThat a replacement/new system will be approved today
Nearby well log/permitLocal depth and construction contextYour parcel's required depth, yield or water quality
Web Soil SurveySoil map units and planning interpretationsA passing perc/site evaluation or engineering design
Written utility/provider responseWhether service is potentially available and under what conditionsFinal cost until route, capacity, fees and construction are defined

Florida water districts

Well permitting is regional.

DEP lists five water management districts and explains that water-well contractor licensing/permitting is implemented through them or delegated authorities.

  • Northwest Florida WMD
  • Suwannee River WMD
  • St. Johns River WMD
  • Southwest Florida WMD
  • South Florida WMD
Find the correct WMD

Official sources

Start with Florida DEP, then move to the local file.

Florida Department of Environmental Protection · Florida

Florida Water Management Inventory

Screen drinking-water source and wastewater-treatment method for developed properties using statewide compiled data.

Important: DEP states that the inventory has data gaps and incomplete provider submissions; absence or classification must be confirmed locally.

Checked August 2026Open source

Florida Department of Environmental Protection · Florida

Florida Onsite Sewage Data

Open recent onsite-sewage permit activity, Florida Water Management Inventory maps and county data downloads.

Important: Statewide datasets do not replace the local permit file, site evaluation or system approval for a proposed parcel.

Checked August 2026Open source

Florida Department of Environmental Protection · Florida

Florida Water Well Construction Program

Official rules and program information for water-well construction, repair and abandonment in Florida.

Important: Permitting is implemented through the appropriate water management district or delegated authority; a nearby well does not guarantee yield or quality.

Checked August 2026Open source

Florida Department of Environmental Protection · Florida

Florida Water Management Districts

Identify Florida's five water management districts and their regional responsibilities and websites.

Important: County boundaries can be split between districts and specific permitting responsibilities can be delegated.

Checked August 2026Open source

USDA Natural Resources Conservation Service · United States

Web Soil Survey

Official soil maps, properties and interpretations for an area of interest.

Important: Soil mapping is a planning resource and does not replace a site evaluation, perc test or engineering investigation.

Checked August 2026Open source