Lake County Well Water: The Complete Treatment Guide
Lake County has more private wells than any other county in Central Florida. If you are on one, you are your own water utility: no one tests it, no one treats it, and no one calls you when something changes. Here is how to run that responsibility properly.
Published June 20, 2026 · Shield Water Solutions
The four problems Lake County wells share
Hardness is nearly universal — the aquifer runs through limestone and readings of 12-20 grains per gallon are routine around Clermont, Groveland, Tavares, and Umatilla.
Iron causes orange staining on sinks, tubs, and laundry. Hydrogen sulfide produces the rotten-egg smell, often worse on the hot side. Manganese stains black and is frequently missed because homeowners assume all staining is iron.
Testing: what to order and how often
Baseline testing should cover total coliform and E. coli, nitrate and nitrite, iron, manganese, hardness, pH, total dissolved solids, and hydrogen sulfide. In agricultural areas near groves and former citrus land, add arsenic and pesticide screening.
Retest annually, and always after flooding, after well or pump work, or if taste, smell, or color changes suddenly. A single clean test from five years ago tells you nothing about today.
Treatment stages in order
Stage one is sediment — a spin-down or cartridge filter that catches sand and grit before it destroys downstream valves. Stage two is oxidation: aeration or a catalytic media that converts dissolved iron, manganese, and sulfide into filterable solids.
Stage three is softening for hardness. Stage four, where bacteria have ever been detected, is UV disinfection. Skipping the oxidation stage and running iron-laden water straight into a softener is the single most common Lake County mistake — it fouls the resin within a year or two.
pH, corrosion, and pumps
Many Lake County wells run slightly acidic, in the 6.0-6.8 range. Acidic water corrodes copper plumbing, produces blue-green staining, and shortens pump and fixture life. A calcite neutralizer upstream of treatment solves it cheaply.
Low-yield wells also need attention to flow rate. A treatment train sized for 12 gallons per minute on a well that delivers 8 will pressure-starve the house during backwash cycles.
Frequently asked
Why does my Lake County well water smell like rotten eggs?+
Hydrogen sulfide gas, usually produced by sulfate-reducing bacteria in the well or aquifer. Aeration or catalytic oxidation followed by filtration removes it; carbon alone is a short-term fix at best.
Will a softener remove iron from well water?+
Only small amounts of dissolved clear-water iron, and it will foul the resin doing it. Above roughly 0.3 ppm, install a dedicated iron removal stage upstream.
How often should Lake County well owners test their water?+
At least annually for bacteria and nitrates, plus after any flooding, pump service, or noticeable change in taste, smell, or color.
Ready for cleaner water?
Get a fixed, no-pressure quote for your Central Florida home in under 2 minutes.
Get my free quote →