Stonecrest Water Hardness & Quality Report (2026)
Water Hardness
6.9 grains per gallon
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
258.1 mg/L
Est. Daily Cost
$0.31
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 Stonecrest, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Stonecrest | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.7 yrs | 8.5 yrs | -33% |
| Washing Machine | 9.3 yrs | 12 yrs | -22% |
| Water Heater | 10.9 yrs | 15 yrs | -27% |
Regional Water Comparison
How Stonecrest compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Stonecrest, Georgia | 117.5 mg/L | 7 ppt | 🟡 Moderately Hard | reservoir |
| Redan, Georgia | 150.5 mg/L | 9.5 ppt | 🟠 Hard | reservoir |
| Conyers, Georgia | 133.5 mg/L | 8.2 ppt | 🟠 Hard | reservoir |
| Candler-McAfee, Georgia | 141 mg/L | 8.8 ppt | 🟠 Hard | reservoir |
| Belvedere Park, Georgia | 147.5 mg/L | 9.2 ppt | 🟠 Hard | reservoir |
National Benchmark
How Stonecrest compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Stonecrest | 117.5 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Stonecrest's Water Unique?
Local geology and source profile
Stonecrest, Georgia, in DeKalb County — one of Georgia's newest cities (incorporated 2017), a majority Black municipality in southeast DeKalb County, known as the Stonecrest area's retail hub (Mall at Stonecrest), a diverse community with large African-American and Caribbean-American populations — draws its municipal water supply from the South River watershed via the DeKalb County Department of Watershed Management. Water hardness in Stonecrest measures 117.5 mg/L — classified as moderately hard.
Stonecrest's moderate hardness reflects the southeast DeKalb County Georgia Piedmont watershed. The South River watershed above Stonecrest–Lithonia drains: the Georgia Piedmont crystalline terrain (Panola Mountain Granodiorite and Lithonia Gneiss — Proterozoic crystalline rocks of the Georgia Piedmont, calcium-moderate); the Arabia Mountain crystalline outcrops (the Arabia Mountain National Heritage Area — exposed Lithonia Gneiss and granodiorite, calcium-moderate); and the DeKalb County Piedmont calcareous residuum soils (moderately calcareous weathering residuum from the Piedmont crystalline formations). The Georgia Piedmont crystalline terrain with moderate calcareous residual soil influence produces the moderate 117.5 mg/L at Stonecrest.
At 117.5 mg/L, Stonecrest residents encounter moderate scale accumulation. Faucet aerators and showerheads develop deposits after several months — monthly cleaning with citric acid solution is practical maintenance. DeKalb County Department of Watershed Management consistently delivers water meeting all Georgia EPD and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the South River (Panola Mountain watershed) via the DeKalb County Department of Watershed Management and the City of Stonecrest Water Division — the DeKalb County southeast Atlanta Georgia Piedmont (Piedmont crystalline gneiss and Panola Mountain granodiorite); moderately hard supply at 117.5 mg/L in DeKalb County.