Fort Myers Water Hardness & Quality Report (2026)
Water Hardness
17.8 grains per gallon
Source
groundwater
pH Level
8.5
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
1000.1 mg/L
Est. Daily Cost
$0.81
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Fort Myers, your appliances are currently losing 41% efficiency due to mineral buildup.
| Appliance | In Fort Myers | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Fort Myers compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Fort Myers, Florida | 304.5 mg/L | 12.1 ppt | 🔴 Very Hard | groundwater |
| North Fort Myers, Florida | 292.5 mg/L | 11.8 ppt | 🔴 Very Hard | groundwater |
| Cape Coral, Florida | 216.5 mg/L | 9.4 ppt | 🔴 Very Hard | groundwater |
| San Carlos Park, Florida | 75.5 mg/L | 4.9 ppt | 🟡 Moderately Hard | groundwater |
| Iona, Florida | 168.5 mg/L | 7.9 ppt | 🟠 Hard | groundwater |
National Benchmark
How Fort Myers compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Fort Myers | 304.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Fort Myers's Water Unique?
Local geology and source profile
Fort Myers, Florida, the Lee County seat on the Caloosahatchee River estuary on the Gulf Coast of southwest Florida (winter home of Thomas Edison and Henry Ford, gateway to Cape Coral and the barrier islands), draws its municipal water supply from the Upper Floridan Aquifer via the City of Fort Myers Utilities Division and Lee County Utilities, pumping from the Lee County Floridan Aquifer wellfield network accessing the Eocene Avon Park Formation (dolomitic limestone) and Ocala Limestone Group at depths of 100–400 feet beneath the southwest Florida coastal plain. Water hardness in Fort Myers reaches 304.5 mg/L — classified as very hard.
Fort Myers's very hard supply reflects the southwest Florida Gulf Coast Floridan Aquifer's carbonate dissolution characteristics. The Upper Floridan Aquifer in Lee County is dominated by the Avon Park Formation — the same highly reactive dolomitic carbonate unit producing extreme hardness throughout south-central and southwest Florida. Dolomite ($CaMg(CO_3)_2$) dissolves rapidly in the Floridan's sub-tropical carbonate karst environment, releasing both calcium and magnesium. The southwest Florida Gulf Coast position of Fort Myers, with relatively shallow Floridan circulation and active dissolution in the warm-climate karst, produces the very high dissolved mineral content characteristic of Lee County Floridan supply.
At 304.5 mg/L, Fort Myers residents face significant hard water challenges throughout the home. Scale deposits form rapidly on all fixtures, shower glass, and tile. Regular descaling with commercial citric acid products is essential. Water heaters need annual professional inspection. City of Fort Myers Utilities and Lee County Utilities consistently deliver water meeting all Florida DEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Upper Floridan Aquifer via the Lee County Utilities and City of Fort Myers Utilities Division — the Eocene Avon Park Formation dolomite and Ocala Limestone beneath Lee County; very hard supply at 304.5 mg/L — reflecting the southwest Florida Gulf Coast Floridan aquifer carbonate dissolution.