Bluffton Water Hardness & Quality Report (2026)
Water Hardness
3.4 grains per gallon
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
89.1 mg/L
Est. Daily Cost
$0.16
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 Bluffton, your appliances are currently losing 8% efficiency due to mineral buildup.
| Appliance | In Bluffton | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.7 yrs | 8.5 yrs | -9% |
| Washing Machine | 11.4 yrs | 12 yrs | -5% |
| Water Heater | 13.3 yrs | 15 yrs | -11% |
Regional Water Comparison
How Bluffton compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Bluffton, South Carolina | 58.5 mg/L | 3.3 ppt | 🟢 Soft | reservoir |
| Hilton Head, South Carolina | 148.5 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| Hilton Head Island, South Carolina | 148.5 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| Wilmington Island, Georgia | 86.5 mg/L | 4.2 ppt | 🟡 Moderately Hard | reservoir |
| Beaufort, South Carolina | 102 mg/L | 5.6 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How Bluffton compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Bluffton | 58.5 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Bluffton's Water Unique?
Local geology and source profile
Bluffton, South Carolina, in Beaufort County — a Beaufort County town adjacent to Hilton Head Island and Hardeeville in the South Carolina Low Country near the Georgia border — receives its municipal water from the Beaufort-Jasper Water and Sewer Authority (BJWSA), drawing from local reservoir sources and the May River watershed in Beaufort County.
The soft 58.5 mg/L hardness and low TDS of 89.1 mg/L reflect the South Carolina Low Country Atlantic Coastal Plain's relatively insoluble geology. The Beaufort County watershed drains the Atlantic Coastal Plain — Cretaceous Black Creek Formation (siliceous fine sand — low solubility), Eocene Ashley Formation (low-purity calcareous marl — some carbonate contribution), and Quaternary barrier island and tidal flat deposits (siliceous). The predominantly siliceous Coastal Plain geology produces the soft Low Country supply.
At 58.5 mg/L, Bluffton's water is soft — light scale forms slowly in appliances, dishwashers remain efficient, and bathroom fixtures need occasional cleaning. Semi-annual descaling is appropriate. The PFAS level of 3.3 ppt is low — the Beaufort County Low Country setting, with Parris Island Marine Corps Recruit Depot (the primary Beaufort County PFAS source — AFFF, low contributing to the May River watershed), produces Bluffton's modest readings.
Geology & Source: Bluffton in Beaufort County draws from the Beaufort-Jasper Water and Sewer Authority on local reservoirs (Beaufort County, South Carolina Low Country) — the Beaufort County watershed drains the Atlantic Coastal Plain (Cretaceous Black Creek siliceous sand, Eocene Ashley Formation — low solubility) — South Carolina Beaufort County Atlantic Coastal Plain siliceous supply produces soft water at 58.5 mg/L with TDS 89.1 mg/L in this Beaufort County South Carolina town.