Fleming Island Water Hardness & Quality Report (2026)
Water Hardness
15.4 grains per gallon
Source
groundwater
pH Level
8.5
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
817.8 mg/L
Est. Daily Cost
$0.70
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 Fleming Island, your appliances are currently losing 35% efficiency due to mineral buildup.
| Appliance | In Fleming Island | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.8 yrs | 12 yrs | -68% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Fleming Island compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Fleming Island, Florida | 264 mg/L | 10.9 ppt | 🔴 Very Hard | groundwater |
| Lakeside, Florida | 75.5 mg/L | 4.9 ppt | 🟡 Moderately Hard | groundwater |
| Fruit Cove, Florida | 78.5 mg/L | 5 ppt | 🟡 Moderately Hard | groundwater |
| Bellair-Meadowbrook Terrace, Florida | 290.5 mg/L | 11.7 ppt | 🔴 Very Hard | groundwater |
| Oakleaf Plantation, Florida | 141.5 mg/L | 7 ppt | 🟠 Hard | groundwater |
National Benchmark
How Fleming Island compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Fleming Island | 264 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Fleming Island's Water Unique?
Local geology and source profile
Fleming Island, Florida, in Clay County — a major northeast Florida Jacksonville suburban community (Fleming Island is a significant Clay County unincorporated community — a northeast Florida suburb situated in the Fleming Island area on the south bank of the St. Johns River between Jacksonville and Orange Park; Fleming Island is one of the most desirable and fastest-growing suburban communities in the greater Jacksonville metro; the Fleming Island–Orange Park–Middleburg corridor in Clay County has been one of the most rapidly growing areas in northeast Florida, driven by Jacksonville metro expansion and the appeal of Clay County's lower property taxes and strong school system), home of Fleming Island Plantation (one of the most significant planned residential communities in Clay County), a diverse Clay County community with a primarily professional, military, and suburban family population (the proximity to Naval Air Station Jacksonville and nearby military facilities makes Clay County a significant military community), adjacent to Orange Park in the Clay County northeast Florida corridor — draws its municipal water supply via the Clay County Utility Authority. Water hardness in Fleming Island measures 264 mg/L — classified as very hard.
Fleming Island's very hard supply reflects the northeast Florida Clay County Upper Floridan carbonate karst's highly calcareous character. The Upper Floridan Aquifer draws from Eocene Avon Park and Ocala Formations (calcareous — Floridan karst). Very limited softening produces the very hard 264 mg/L.
At 264 mg/L, Fleming Island residents face significant hard water challenges. Regular water softeners and descaling are strongly recommended. Clay County Utility Authority consistently delivers water meeting all Florida DEP and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Upper Floridan Aquifer via the Clay County Utility Authority — the Clay County northeast Florida Jacksonville suburban Fleming Island corridor (Eocene calcareous Avon Park and Ocala Formations — the extremely calcareous northeast Florida Clay County Floridan carbonate karst; very limited softening); very hard at 264 mg/L in Clay County.