Springfield Water Hardness & Quality Report (2026)
Water Hardness
5.6 grains per gallon
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
150.9 mg/L
Est. Daily Cost
$0.26
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 Springfield, your appliances are currently losing 13% efficiency due to mineral buildup.
| Appliance | In Springfield | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.4 yrs | 8.5 yrs | -25% |
| Washing Machine | 10 yrs | 12 yrs | -17% |
| Water Heater | 11.8 yrs | 15 yrs | -21% |
Regional Water Comparison
How Springfield compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Springfield, Tennessee | 96 mg/L | 3.2 ppt | 🟡 Moderately Hard | reservoir |
| Goodlettsville, Tennessee | 204 mg/L | 6.9 ppt | 🔴 Very Hard | reservoir |
| Hendersonville, Tennessee | 104.5 mg/L | 3.5 ppt | 🟡 Moderately Hard | reservoir |
| Nashville, Tennessee | 125.5 mg/L | 4.2 ppt | 🟠 Hard | reservoir |
| Portland, Tennessee | 196 mg/L | 6.6 ppt | 🔴 Very Hard | reservoir |
National Benchmark
How Springfield compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Springfield | 96 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Springfield's Water Unique?
Local geology and source profile
Springfield, Tennessee, in Robertson County — the Robertson County seat adjacent to White House and Greenbrier in north-central Tennessee, an agricultural tobacco-belt county north of Nashville — receives its municipal water from the Springfield Water Division, drawing from Lake Springfield on Sulphur Fork Creek (Robertson County) through the Springfield treatment plant.
The moderately hard 96 mg/L hardness and TDS of 150.9 mg/L are lower than many Middle Tennessee supplies (Nashville: 250+ mg/L), reflecting the Robertson County watershed's somewhat diluted carbonate influence. The Robertson County watershed drains the Middle Tennessee Limestone Basin — Ordovician Stones River Group limestone (calcareous — but the Sulphur Fork Creek headwaters drain north toward the Highland Rim, which has a thinner carbonate section), Silurian Ross Formation (calcareous), and minor Mississippian Ft. Payne Chert (less soluble). The moderate carbonate influence and dilution from the Highland Rim drainage produces the lower-than-Nashville hardness.
At 96 mg/L, Springfield'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 3.2 ppt is very low — the Robertson County agricultural tobacco-belt setting has limited industrial PFAS point sources, and the north Tennessee rural environment produces minimal PFAS loading from industrial sources.
Geology & Source: Springfield in Robertson County draws from the Springfield Water Division on Lake Springfield (Robertson County, north Tennessee) — the Robertson County watershed drains the Tennessee Limestone Basin (Ordovician Stones River Group limestone, Silurian Ross Formation calcareous) — Tennessee Robertson County Ordovician limestone watershed produces moderately hard water at 96 mg/L with TDS 150.9 mg/L in this Robertson County Tennessee city.