Seminole Water Hardness & Quality Report (2026)
Water Hardness
8.2 grains per gallon
Source
groundwater
pH Level
7.8
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
356.7 mg/L
Est. Daily Cost
$0.38
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 Seminole, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Seminole | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.9 yrs | 8.5 yrs | -42% |
| Washing Machine | 8.4 yrs | 12 yrs | -30% |
| Water Heater | 10 yrs | 15 yrs | -33% |
Regional Water Comparison
How Seminole compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Seminole, Florida | 141 mg/L | 7 ppt | 🟠 Hard | groundwater |
| Largo, Florida | 87.5 mg/L | 5.3 ppt | 🟡 Moderately Hard | groundwater |
| Pinellas Park, Florida | 278 mg/L | 11.3 ppt | 🔴 Very Hard | groundwater |
| West and East Lealman, Florida | 178 mg/L | 8.2 ppt | 🟠 Hard | groundwater |
| Lealman, Florida | 100 mg/L | 5.7 ppt | 🟡 Moderately Hard | groundwater |
National Benchmark
How Seminole compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Seminole | 141 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Seminole's Water Unique?
Local geology and source profile
Seminole, Florida, in Pinellas County — a Pinellas County city adjacent to Clearwater and St. Petersburg in the north Pinellas County corridor, one of the Tampa Bay metro's largest unincorporated-turned-incorporated communities — receives its municipal water from Pinellas County Utilities, drawing from the Floridan Aquifer through the Pinellas County water system's deep wells and regional treatment plants.
The moderately hard 141 mg/L hardness and TDS of 356.7 mg/L reflect the Pinellas County Floridan Aquifer supply — similar to the Charlotte County reading (punta-gorda-fl: 100.5 mg/L) but somewhat harder, reflecting the Pinellas County aquifer's different carbonate character. The Floridan Aquifer in Pinellas County is developed in the Eocene Avon Park Formation (dolomitic limestone), Eocene Ocala Limestone (high-purity carbonate platform), and the Miocene Hawthorn Group (phosphatic dolomite — elevated dissolved solids).
At 141 mg/L, Seminole's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and bathroom fixtures develop calcium deposits. Quarterly descaling is appropriate. The PFAS level of 7.0 ppt warrants a certified drinking water filter — MacDill Air Force Base (Tampa, Hillsborough County — AFFF in the Tampa Bay watershed), the Clearwater-St. Pete industrial corridor, and the Tampa Bay PFAS complex contribute to Seminole's elevated readings.
Geology & Source: Seminole in Pinellas County draws from Pinellas County Utilities on the Floridan Aquifer wells (Eocene Avon Park Formation dolomite, Pinellas County) — the deep Floridan Aquifer beneath Pinellas County produces moderately hard groundwater at 141 mg/L with TDS 356.7 mg/L in this Pinellas County Florida city.