State distribution
Hardness across indexed ZIPs
Counts describe published ZIP profiles, not a population-weighted statewide sample.
Soft · 0–60 PPM107
Moderately hard · 61–120 PPM19
Hard · 121–180 PPM4
Very hard · 181+ PPM4
State water index
South Carolina water hardness
Search 173 indexed communities and 236 ZIP profiles, then compare the underlying utility, source, distance, and reporting context.
Median regional evidence
27PPM
Soft
Indexed range 3–1400 PPM
- ZIP profiles
- 236
- Cities
- 173
- Matched utilities
- 377
- Counties
- 45
Understanding South Carolina
Why local comparisons matter here
South Carolina extends from the Blue Ridge through the Piedmont to the Coastal Plain, crossing distinct river, reservoir, and aquifer settings.
In this index, soft is the largest category, covering 107 of 134 profiles with hardness data. The state median is 27 PPM, but the full indexed range is 3–1400 PPM.
Evidence coverage
What the current records support
- Hardness estimate
- 57%
- Lead 90th percentile
- 100%
- Copper 90th percentile
- 22%
107
Low-confidence hardness profiles
12
Research-comparison eligible profiles
Reported source water
Utility source mix
- Groundwater
- 217
- Surface water
- 160
Highest medians
Highest eligible city medians
Lowest medians
Lowest eligible city medians
City directory
Explore South Carolina by city
Search by city or county, then sort by name, hardness, or ZIP coverage.
173 cities · 236 ZIP profiles
173 cities found
Page 1 of 8
Abbeville
Abbeville County · 1 ZIP
—
No regional sample1 active record
Adams Run
Charleston County · 1 ZIP
34PPM regional
Single regional valueNo active flag
Aiken
Aiken County · 2 ZIPs
15PPM regional
Single regional value7 active records
Allendale
Allendale County · 1 ZIP
43PPM regional
Single regional valueNo active flag
Anderson
Anderson County · 2 ZIPs
—
No regional sampleNo active flag
Andrews
Williamsburg County · 1 ZIP
183PPM regional
Single regional valueNo active flag
Awendaw
Charleston County · 1 ZIP
183PPM regional
Single regional valueNo active flag
Bamberg
Bamberg County · 1 ZIP
90PPM regional
Single regional valueNo active flag
Barnwell
Barnwell County · 1 ZIP
51PPM regional
Single regional valueNo active flag
Beaufort
Beaufort County · 4 ZIPs
106PPM regional
Regional range 96.5–108No active flag
Beech Island
Aiken County · 1 ZIP
3PPM regional
Single regional valueNo active flag
Belton
Anderson County · 1 ZIP
—
No regional sampleNo active flag
Bennettsville
Marlboro County · 1 ZIP
—
No regional sampleNo active flag
Bethune
Kershaw County · 1 ZIP
—
No regional sampleNo active flag
Blacksburg
Cherokee County · 1 ZIP
38PPM regional
Single regional valueNo active flag
Bluffton
Beaufort County · 1 ZIP
122PPM regional
Single regional valueNo active flag
Bowman
Orangeburg County · 1 ZIP
—
No regional sampleNo active flag
Branchville
Orangeburg County · 1 ZIP
78PPM regional
Single regional valueNo active flag
Brunson
Hampton County · 1 ZIP
51PPM regional
Single regional valueNo active flag
Calhoun Falls
Abbeville County · 1 ZIP
—
No regional sampleNo active flag
Camden
Kershaw County · 1 ZIP
13PPM regional
Single regional valueNo active flag
Carlisle
Chester County · 1 ZIP
—
No regional sampleNo active flag
Catawba
York County · 1 ZIP
—
No regional sampleNo active flag
Cayce
Lexington County · 1 ZIP
—
No regional sampleNo active flag
County comparison
Highest regional-evidence county medians
| County | Median | Range | ZIP profiles |
|---|---|---|---|
| Jasper County | 123 PPM | 105.5–140 | 2 |
| Beaufort County | 112 PPM | 96.5–1400 | 10 |
| Bamberg County | 90 PPM | 83.7–89.9 | 3 |
| Williamsburg County | 86 PPM | 32.7–182.5 | 5 |
| Hampton County | 59 PPM | 49.6–107 | 8 |
| Colleton County | 57 PPM | 28.9–58.7 | 6 |
| Barnwell County | 51 PPM | 50.8–55.6 | 3 |
| Calhoun County | 48 PPM | 13.8–82.7 | 2 |
| Allendale County | 43 PPM | 42.8–42.8 | 1 |
| Chester County | 38 PPM | 37.7–37.7 | 2 |
| Cherokee County | 38 PPM | 37.7–37.7 | 4 |
| Union County | 38 PPM | 37.7–37.7 | 3 |