Private wells in Osceola, Polk, Orange, and Lake Counties draw from the Floridan Aquifer. It is a deep limestone formation that dissolves minerals naturally. Five problems are most common: hydrogen sulfide, dissolved iron, dissolved manganese, high hardness, and bacterial risk. Hydrogen sulfide causes the rotten-egg odor. Iron and manganese stain fixtures orange and black. Hard water forms white scale and shortens appliance life. Private wells receive no ongoing treatment or government testing. The chemistry you draw is the chemistry you get. This guide covers what USGS and Florida DEP data show about each issue. It names the most affected communities. It explains which treatment systems work. Pure Agua offers a free in-home water test. It measures all five before any system is recommended.
Each issue below has a basis in USGS and EPA data for the Floridan Aquifer. Treatment follows from the chemistry. No system is recommended before a test confirms your actual levels.
Bacteria break down sulfate in Floridan Aquifer limestone when oxygen levels are low
Hydrogen sulfide in Central Florida well water: causes and treatment →Ferrous iron dissolves from Floridan Aquifer minerals in low-oxygen zones
Iron and manganese in Central Florida well water: USGS data and removal →Soluble manganese from Floridan Aquifer reducing zones; often found with iron
Manganese removal from Central Florida well water →Calcium and magnesium dissolve from Floridan Aquifer limestone as water moves through the rock
Well water treatment options for Central Florida hardness →Surface water pathways: poor well casing, nearby septic systems, flooding, wildlife
Well water testing guide for Kissimmee and Orlando →Each guide below draws from USGS, EPA, and Florida DEP data for the Floridan Aquifer. Links open the full article.
What USGS data shows about dissolved sulfide in the Floridan Aquifer. Which Osceola, Polk, and Lake County communities are most affected. How oxidation filtration removes the rotten-egg odor at the point of entry.
Read the hydrogen sulfide guide →Why Floridan Aquifer wells in reducing zones produce water that stains orange and black. What USGS data documents about iron and manganese concentrations. How air-injection filtration removes both.
Read the iron and manganese guide →A complete overview of private well water chemistry in Osceola, Orange, and Polk Counties. It covers aquifer zones, Florida DEP testing recommendations, and treatment system selection for Central Florida groundwater conditions.
Read the Kissimmee and Orlando well water guide →A location-specific guide for Poinciana well owners in Osceola and Polk County. It covers iron, hydrogen sulfide, bacteria, hardness, and low pH problems common in that area and the filtration stack that addresses them.
Read the Poinciana well water filtration guide →Pure Agua brings a water test to your Central Florida home. We measure hydrogen sulfide, iron, manganese, hardness, pH, and total dissolved solids at your tap. You get a printed results sheet before we recommend any system. No charge and no commitment to buy.
Serving Kissimmee, Poinciana, St. Cloud, Davenport, Haines City, and surrounding Central Florida communities.
Treating a well without a test is a common mistake. Iron levels, pH, hardness, and hydrogen sulfide all affect sizing. The wrong-size iron filter ruins the softener resin. A properly sized system needs the full test panel.
Pure Agua's in-home test measures:
Results are delivered as a printed sheet during the visit. No system is recommended until the panel is complete.
For bacteria, Pure Agua recommends a certified lab test in addition to the in-home panel. Bacteria need incubation time. A field kit cannot provide this. The Florida Department of Health maintains a list of certified testing labs at floridahealth.gov.
Iron, sulfur, and hardness problems from the Floridan Aquifer affect Osceola, Polk, Orange, and Lake Counties. Many homes in these areas use private wells:
See the full Central Florida service area or call (407) 773-2883 to confirm availability for your address.
The rotten-egg odor comes from hydrogen sulfide. Sulfate-reducing bacteria make this gas. They break down sulfate in the Floridan Aquifer's limestone. This happens naturally in low-oxygen zones. It is not surface contamination. The EPA has no drinking water standard for hydrogen sulfide. People can smell it at very low levels. Levels vary by well, so a free test measures yours. A whole-house filter removes hydrogen sulfide before it reaches any tap.
Orange staining comes from iron in your well water. Iron is clear when dissolved. Air turns it into rust. Rust leaves orange deposits on sinks, tubs, and laundry. The EPA limit for iron is 0.3 mg/L. Many Central Florida wells exceed this. Black staining means dissolved manganese. The EPA limit for manganese is 0.05 mg/L. An air-injection filter removes both metals before water enters your home.
Well water from the Floridan Aquifer is very hard. It ranges from 150 to 350 mg/L by location. That is 8 to 20 grains per gallon. Limestone in the aquifer dissolves calcium and magnesium into the water. Hard water leaves white scale on fixtures. It reduces soap lather and shortens appliance life. A water softener removes calcium and magnesium. Get the exact hardness level with a free in-home test.
Yes. Florida health officials advise annual testing for bacteria and E. coli. Test more often if water taste or odor changes. Also test after a flood or any plumbing repair. Private well water gets no ongoing treatment. Coliform suggests surface or septic pollution. Carbon and iron filters do not disinfect. UV treatment is the best chemical-free option. Install it after the filter.
Always test before buying any treatment system. Iron, manganese, pH, hardness, and hydrogen sulfide all affect sizing. A filter bought without a test may be the wrong size. The wrong-size filter ruins the softener resin. A water test takes about 30 minutes. It shows which levels are high before any system is chosen.
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Also see: well water guide for Kissimmee and Orlando , hydrogen sulfide treatment , and iron and manganese removal.