Middleburg Water Hardness & Quality Report (2026)
Water Hardness
6.4 grains per gallon
Source
groundwater
pH Level
7.6
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
262.6 mg/L
Est. Daily Cost
$0.29
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 Middleburg, your appliances are currently losing 15% efficiency due to mineral buildup.
| Appliance | In Middleburg | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6 yrs | 8.5 yrs | -29% |
| Washing Machine | 9.5 yrs | 12 yrs | -21% |
| Water Heater | 11.2 yrs | 15 yrs | -25% |
Regional Water Comparison
How Middleburg compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Middleburg, Florida | 110 mg/L | 6 ppt | 🟡 Moderately Hard | groundwater |
| Oakleaf Plantation, Florida | 141.5 mg/L | 7 ppt | 🟠 Hard | groundwater |
| Lakeside, Florida | 75.5 mg/L | 4.9 ppt | 🟡 Moderately Hard | groundwater |
| Fleming Island, Florida | 264 mg/L | 10.9 ppt | 🔴 Very Hard | groundwater |
| Bellair-Meadowbrook Terrace, Florida | 290.5 mg/L | 11.7 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Middleburg compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Middleburg | 110 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Middleburg's Water Unique?
Local geology and source profile
Middleburg, Florida, in Clay County — a Clay County unincorporated community adjacent to Orange Park and Green Cove Springs in northeast Florida — receives its water from the Clay County Utility Authority, drawing from the Floridan Aquifer (Clay County) through the northeast Florida distribution.
The moderately hard 110 mg/L hardness and TDS of 262.6 mg/L reflect the northeast Florida Clay County Floridan Aquifer supply's moderate calcareous character — the Eocene Ocala Limestone at Clay County is somewhat shallower and less confined than the deeper Tampa Bay Floridan draw, producing moderate rather than hard water (compare Lockhart FL: 184 mg/L; Thonotosassa FL: 166.5 mg/L on the harder central Florida Floridan draw). The Floridan Aquifer at Clay County — Eocene Ocala Limestone (calcareous — primary hardness contributor), Paleocene Cedar Keys Formation (calcareous — secondary contributor), and Pleistocene surficial aquifer (slightly calcareous — minor).
At 110 mg/L, Middleburg's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 6.0 ppt warrants a certified drinking water filter — the Clay County northeast Florida military and industrial corridor contribute to Middleburg's readings.
Geology & Source: Middleburg in Clay County draws from Clay County Utility Authority on the Floridan Aquifer (Clay County, northeast Florida) — the Floridan Aquifer at Clay County is developed in calcareous Eocene Ocala Limestone and Paleocene Cedar Keys Formation — Florida Clay County Floridan Aquifer Eocene-Paleocene calcareous aquifer produces moderately hard water at 110 mg/L with TDS 262.6 mg/L.