Oldsmar Water Hardness & Quality Report (2026)
Water Hardness
6.3 grains per gallon
Source
groundwater
pH Level
7.6
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
253.9 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 Oldsmar, your appliances are currently losing 14% efficiency due to mineral buildup.
| Appliance | In Oldsmar | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.1 yrs | 8.5 yrs | -28% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 11.3 yrs | 15 yrs | -25% |
Regional Water Comparison
How Oldsmar compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Oldsmar, Florida | 107 mg/L | 5.9 ppt | 🟡 Moderately Hard | groundwater |
| Safety Harbor, Florida | 236 mg/L | 10 ppt | 🔴 Very Hard | groundwater |
| Westchase, Florida | 159.5 mg/L | 7.6 ppt | 🟠 Hard | groundwater |
| East Lake, Florida | 104.5 mg/L | 5.9 ppt | 🟡 Moderately Hard | groundwater |
| Town 'n' Country, Florida | 194 mg/L | 8.7 ppt | 🔴 Very Hard | groundwater |
National Benchmark
How Oldsmar compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Oldsmar | 107 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Oldsmar's Water Unique?
Local geology and source profile
Oldsmar, Florida, in Pinellas County — a Pinellas County city adjacent to Safety Harbor and Largo at the north end of Old Tampa Bay in west-central Florida — receives its water from Pinellas County Utilities, drawing from the Floridan Aquifer (Pinellas County) through the Tampa Bay metro distribution.
The moderately hard 107 mg/L hardness and TDS of 253.9 mg/L reflect the west-central Florida Pinellas County Floridan Aquifer's moderate calcareous character — consistent with other Pinellas County Floridan communities (Safety Harbor: ~106 mg/L; Dunedin: ~107 mg/L). The Floridan Aquifer at Pinellas County is developed in Eocene Avon Park Formation (calcareous — primary hardness contributor), Oligocene Suwannee Limestone (calcareous — secondary contributor), and Eocene Ocala Limestone (calcareous).
At 107 mg/L, Oldsmar'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 5.9 ppt warrants a certified drinking water filter — MacDill Air Force Base (Hillsborough County — AFFF) and the Tampa Bay metro industrial corridor contribute to Oldsmar's readings.
Geology & Source: Oldsmar in Pinellas County draws from the Pinellas County Utilities on the Floridan Aquifer (Pinellas County, west-central Florida) — the Floridan Aquifer at Pinellas County is developed in Eocene Avon Park Formation (calcareous) and Oligocene Suwannee Limestone (calcareous) — Florida Pinellas County Floridan Aquifer Eocene-Oligocene calcareous limestone produces moderately hard water at 107 mg/L with TDS 253.9 mg/L.