15 Years of Central Florida Wells: 7 Patterns That Always Repeat

After 15+ years drilling, pulling, rehabilitating, and treating private wells across Central Florida under FL Water Well Contractor License #7494, the same seven patterns surface on almost every call. They are not exotic. They are predictable, and once you can name them, the fix is usually a one-visit job. This article walks each pattern, the diagnostic signal that flags it, and the repair approach that actually holds in Floridan and surficial aquifer conditions.

Quality Filters And Pumps has worked on wells from Apopka to Ocala to Sanford for 15+ years. The pattern map below is the order of probability we run when a homeowner calls with "something is wrong with my well." Three or four of these will apply to your system right now.

Across Marion, Alachua, Citrus, Lake, Orange, Seminole, Volusia, and Polk counties, our wells draw from two aquifer systems with very different chemistry. The USGS Floridan Aquifer System sits beneath a thinner surficial aquifer. Both supply drinking water; both produce the same seven recurring patterns.

Why Central Florida Wells Repeat the Same Failures

The geology is the reason. The Floridan is a thick limestone formation delivering high-volume, very hard water (15 to 40+ gpg in most counties we serve). Above it, surficial sand and clay produces shallower, softer water with different chemistry. Permitting falls under St. Johns River WMD for most of the area, with FDEP Chapter 62-532 setting construction standards.

Typical Floridan depths by county: Marion 180 to 350 ft, Alachua 200 to 400, Citrus 120 to 250, Lake 240 to 450, Orange 280 to 500, Seminole 300 to 500, Volusia 180 to 350, Polk 350 to 600+. Surficial wells run 40 to 120 ft. Depth, casing length, screen position, and aquifer choice drive almost every long-term outcome.

Pattern 1: The Pressure Tank That Lost Its Air Charge 4 Years Ago

Roughly 7 of every 10 service calls we run for "pump that keeps clicking on and off" trace to a waterlogged pressure tank. The bladder has failed, the air charge is gone, and the pump now cycles 6 to 20 times per minute instead of running for 60 to 90 seconds and resting. The tank looks fine from the outside. The pump pays the price.

Diagnostic signal. Tap the side of the tank with a knuckle. A healthy tank sounds hollow on top, solid on the bottom. A waterlogged tank sounds solid top to bottom. The pressure gauge needle pulses with every faucet draw rather than swinging smoothly. The pressure switch contacts show carbon scoring from rapid cycling.

The fix that holds. Replace the tank, not the bladder. Bladder replacement on a 6 to 10 year old tank fails again within 2 to 3 years on Central Florida hard water. A new properly sized tank (32 to 86 gallon drawdown) runs $300 to $700 installed and resets the pump's cycle count for another 8 to 12 years. The full sizing protocol is in our pressure tank sizing guide. Standard pressure switch settings: 40/60 or 50/70 psi by elevation.

If the pump hums louder than it used to or the breaker has tripped recently, rapid cycling has already damaged the start winding. A new tank without addressing the pump is a coin flip. Our pump repair service walks the diagnostic.

Pattern 2: Hard Water That Quietly Destroys Everything Downstream

Central Florida Floridan wells deliver some of the hardest water in the United States. 15 to 25 grains per gallon is normal across Marion and Alachua. Western Orange, Lake, and Polk routinely run 25 to 40+ gpg. The water itself is not unsafe. The downstream cost over 10 years is substantial.

What we always find. Water heater elements covered in white scale, replaced every 4 to 6 years instead of 10 to 12. Dishwasher solenoids stuck open. Refrigerator ice makers calcified shut. Shower valves with frozen cartridges. Toilet fill valves clicking instead of sealing. A 40-gallon water heater on untreated 25 gpg Floridan water loses 30 to 40 percent of its volume to scale by year 6.

The fix. A properly sized whole-house softener upstream of the water heater. Salt-based ion-exchange is the only technology that actually removes hardness, despite "salt-free" marketing. The EPA SDWS does not regulate hardness because it is nuisance, not health. The 10-year ROI math favors the softener inside 4 years on water over 15 gpg.

Sizing: grain capacity = daily gallons x hardness in gpg, plus 30 percent reserve. A 4-person home at 75 gpd per person on 20 gpg needs ~45,000 grains, a 48,000-grain unit. Our whole-house filtration guide and the filtration pillar walk the matrix.

Pattern 3: Iron and Sulfur in Shallow Wells (Surficial Aquifer Tells)

Surficial wells (40 to 120 ft, typically older or shallower wells in unincorporated Marion, Alachua, Citrus, and Lake) carry distinct chemistry: lower hardness, higher iron, sulfide, and tannin. Floridan wells in the same county can be 200 ft deeper and show none of these.

The signature. Rotten-egg smell from the hot side first (sulfate-reducing bacteria thrive in the anode-rod environment), orange staining in toilet tanks and washer seals, biofilm at the wellhead, tea-colored water in clear glasses. Iron at 0.3 mg/L (EPA SMCL) is visible. At 1 to 2 mg/L it is unmistakable. At 5+ mg/L the water is unusable untreated.

The fix. Match technology to load. Under 2 ppm iron with mild sulfide: single-tank AIO (Katalox Light). 2 to 5 ppm: AIO with heavier media and faster backwash. Over 5 ppm or bacterial iron slime: chlorine injection + contact tank + carbon polish. Diagnostic: iron and sulfur in Marion and Alachua wells. Install: iron filter installation guide.

Trap: never put a softener upstream of an iron filter when iron is over 0.3 ppm. Resin fouls inside 18 months. Iron filter first, softener second.

Pattern 4: Lightning Damage Hiding as a Mystery Pump Failure

Central Florida averages 70 to 100 lightning days per year, among the highest in the United States. We see 3 to 5 lightning-related pump failures per month during the May to October storm season. About a third of homeowners do not connect the failure to a recent storm because the symptoms appear hours or days later.

The signature. Pump worked last week, now will not start. Pressure switch contacts blown open. 3-wire control box with charred capacitor or fried start relay. Wire splice at the pitless adapter blackened. Sometimes arc tracks on the casing cap. Lightning claims are routinely paid under FL homeowner policies even when wear-out claims are not.

The fix. Replace damaged components (full pump if motor windings took a direct hit, control box only if the surge stopped at the splice), then add surge protection at the pump control panel. A $120 to $250 panel protector plus a point-of-use protector at the control box prevents most future events. Full protocol: lightning damage protection.

Insurance tip: document the storm date with NWS strike data before filing. We provide a written diagnostic on letterhead for every lightning failure. See pump repair service.

Pattern 5: Bacterial Contamination After Flooding or Septic Proximity

Every Florida hurricane season produces a wave of post-flood well calls. The wells that fail are older, shallower wells with compromised casing, a low or missing cap, or a septic system within 75 feet (the FDEP setback; pre-1990s installs frequently sit closer).

The signature. Sudden taste or smell change after a rain event. Cloudy water that does not clear after running taps for 10 minutes. Coliform-positive lab result from a routine water test. Gastrointestinal symptoms in the household with no other source.

The fix. Step one is a bacterial test, not chlorination. Shocking without confirmation wastes the diagnostic. If coliform is confirmed, shock at 50 to 200 ppm available chlorine for 24 hours, then flush and retest at 7 to 14 days. Full protocol: Florida well water testing guide.

If the well repeatedly tests positive, the issue is structural: cracked casing, low cap, or septic drainfield migrating toward the wellhead. Repeat shock cycles are not the answer. The well needs casing inspection, cap replacement, or full replacement. CDC private well guidance walks the homeowner schedule.

Pattern 6: The Permitting and Setback Surprise on a New Drill

The expensive surprise: the homeowner who buys raw land or a tear-down lot and assumes a well permit is a formality. It is not. Under FAC Chapter 62-532 and WMD rules, a new permit requires setbacks: 75 ft from any septic tank, 100 ft from a drainfield, 50 ft from a stormwater pond, 200 ft from a Class V injection well, more in sensitive areas.

What we always find. A lot that looked perfect on paper has a neighbor's septic drainfield running closer than the survey showed. A retention pond was added later. The county has a karst-overlay zone that adds setbacks. The WMD requires monitoring on higher-capacity wells in stressed zones.

The fix. Permit before you buy or contract. A pre-drill site assessment plus a WMD pre-application call plus an on-site setback walk catches 95 percent of surprises. Full walkthrough: Florida well construction permits and well drilling cost Central Florida 2026. The pillar at well drilling Central Florida walks the full timeline; well drilling service covers what we handle.

Pattern 7: The 2-Wire Pump in a Karst Well That Should Have Been a 3-Wire

The last pattern is the most installer-driven and the most preventable. Submersible pumps come in two electrical types: 2-wire (start components built into the motor, no above-ground control box) and 3-wire (control box with start capacitor, run capacitor, and relay near the pressure tank). In karst country across western Marion, Citrus, and parts of Alachua, where wells sit in fractured limestone and the formation occasionally drops debris into the casing, the wrong choice costs the homeowner significantly more over the pump's life.

What we always find. A 2-wire submersible at 280 feet in a Floridan well producing fine limestone sediment. The pump fails at year 5 instead of year 10. Diagnosis requires pulling the whole well because every start component is inside the submerged motor. Pull-and-replace runs $1,200 to $2,600. A 3-wire pump lets the contractor diagnose at the surface control box without pulling. Lifetime service-cost difference: $1,500 to $3,000 over 10 years. Full walkthrough: pump won't turn on diagnostic checklist.

The fix. On any new install over 200 feet and any karst retrofit, specify a 3-wire pump. Equipment premium $80 to $200; service savings 10x to 20x over the pump's life. See karst country well drilling.

Recommended Method: Symptom to Diagnostic to Fix

If your situation matches a row but you are not sure on the next step, call (352) 268-9048 or request a diagnostic visit. Every visit starts with a written diagnostic, not a quote.

Call a Professional If...

• Your pump is short-cycling more than 5 times per minute. Continued cycling damages the motor start winding within weeks. Stop running the pump and diagnose.
• You see sand, air, or sudden cloudiness in the discharge. Screen failure, pump drop, or karst collapse. The fix is below the wellhead and requires a licensed contractor. See sand and sediment fixes.
• The breaker has tripped twice this week. One reset is reasonable. Two means a fault. Repeated resets can melt wiring and create a fire risk.
• Your water test came back coliform-positive. Do not shock the well without a confirmation test and a casing inspection. Repeated shock cycles mask a structural problem.
• You smell sulfide gas at the wellhead, not just in the water. Gas accumulating at the cap is a venting issue and can pose a confined-space hazard during pump pulls.
• Your well is over 25 years old and has never had a casing inspection. Older casings (steel, in particular) corrode from the inside. A simple video inspection runs $150 to $350 and catches problems years before they fail.
• You are planning to drill a new well within 100 feet of any septic feature. Setback math under FAC 62-532 is non-negotiable. Permit first, contract second.

What Our 15+ Years on Central Florida Wells Actually Looks Like

Numbers we run: 6 to 10 pump pulls per week in peak season, 3 to 5 whole-house filtration installs per week, 8 to 14 new wells drilled per month across 22 cities, 40 to 60 service calls per week May to October. Every visit ends with a written report, whether we sell the work or not.

Chase Norris holds FL Water Well Contractor License #7494, on the about page, every quote, and our LocalBusiness schema. Licensed contractors are the only people permitted to work below the casing under FAC 62-532. Unlicensed work voids manufacturer warranty and can trigger permit issues at the next inspection.

Most-trafficked local pages: Orlando, pump repair Orlando, Kissimmee, Sanford, Lake Mary, Apopka, Winter Garden, Winter Park.

FAQs: 15 Years of Central Florida Well Patterns

What is the single most common Central Florida well problem you see? A waterlogged pressure tank causing pump short-cycling. Roughly 7 of every 10 "pump that keeps clicking on and off" calls trace to a tank with a failed bladder and lost air charge. The pump itself is usually fine until the tank's been bad for a year or more.

How deep are most Central Florida wells? Floridan-aquifer wells run 180 to 500+ feet depending on county. Surficial wells run 40 to 120 feet. Polk County is typically the deepest in our service area, Citrus is typically the shallowest. The well drilling pillar guide has the full county-by-county depth table.

How often should a Central Florida well water test be done? Annually for bacterial (coliform), every 3 years for the full chemistry panel (iron, sulfate, sulfide, hardness, nitrate, arsenic), and immediately after any flood event, septic-system work, or sudden taste or odor change. The testing guide has the full schedule.

Is well water in Central Florida safe to drink without treatment? Floridan-aquifer water is generally safe at the source but is rarely palatable without softening (hardness over 15 gpg) and often needs iron, sulfide, or both addressed. Surficial-aquifer water needs more treatment by default. Either way, an annual coliform test is the baseline.

How long do Central Florida well pumps actually last? Submersible pumps rated for 10 to 15 years typically fail at 7 to 11 years on Central Florida hard water because of scale on the motor and impeller stages. Lightning shortens that further. Pumps on softened water and surge-protected circuits often hit the upper end of the range. See how long does a well pump last.

Do I need a permit to drill a new well on my property? Yes. Every new well in Florida requires a Water Management District permit under FAC 62-532. The District for our service area is mostly St. Johns River WMD, with portions in Southwest Florida WMD. Permit before contract, every time.

Free Diagnostic Visit Across Central Florida

Quality Filters And Pumps has drilled, serviced, and treated private wells across Marion, Alachua, Citrus, Lake, Orange, Seminole, Volusia, and Polk counties for 15+ years. Chase Norris, FL Water Well Contractor License #7494. Every visit starts with a written diagnostic. Call (352) 268-9048 or contact us. Service areas: Orlando, Kissimmee, Sanford, Apopka, Ocoee. Related: 2026 well drilling cost, pump running constantly, pump troubleshooting, water filtration, filtration repair, about, financing, FAQ.