For a Lake County well, diameter alone does not identify the permitting office. DOH-Lake describes delegated permits for wells under six inches within the St. Johns River Water Management District portion of the county. The District’s own page also lists cases it handles directly, including certain wells in delineated areas. DOH-Lake program · District exceptions
Ask the location question before the size question
The following comparison concerns the St. Johns District area, not every Lake County parcel:
| Proposed well circumstance | What the published guidance establishes |
|---|---|
| Under six inches | DOH-Lake describes a delegated program, but the District’s direct-permitting cases still need checking |
| Exactly six inches or larger outside diameter at land surface | The District lists these wells for its own permitting |
| In a delineated area in Lake County | The District lists Lake among counties where it handles those delineated-area wells |
| Coupled “gang” wells or geothermal arrangements | The District lists configuration-specific criteria; a single diameter is not enough |
Delegation description · District’s complete scope list
“Delineated area” is not LSL’s diagnosis that a private well is contaminated. The District describes it as a legally identified contaminated or vulnerable area with additional construction requirements. Ask the authority to check the location rather than deciding from a neighborhood name or an old report.
Keep the useful scope card
Prepare the exact site location, proposed or recorded diameter, intended use, work proposed and any existing permit number. Add whether the proposal connects multiple wells or involves a geothermal system. If the diameter or construction history is uncertain, identify that uncertainty rather than guessing from a visible cap.
This is LSL’s intake aid. The District specifically describes gang wells by combined nominal casing sizes and purpose and distinguishes open-loop and closed-loop geothermal arrangements. Ask which published category fits the actual design; the short table is not an exhaustive substitute for that review. Configuration rules
A limited-use system has a separate operating question
DOH-Lake’s page separately describes construction and operating permits for small community and commercial limited-use water systems and lists distinct forms. A well-construction answer does not establish that a system’s operating requirements have been met. Water Services
DOH-Lake lists 352-253-6130 for assistance. Ask which authority governs the site and proposed work before selecting or paying for an application. The District directs delegated-permit fee questions to the relevant local authority; no private fee is calculated here. District fee routing
LSL read both agencies’ operative pages on September 20, 2026. We did not verify a parcel’s district or delineated status, inspect a well, submit a form or test water. This guide does not authorize drilling, prescribe disinfection or determine drinking-water safety.