Scottdale Water Hardness & Quality Report (2026)
Water Hardness
5.9 grains per gallon
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
197.6 mg/L
Est. Daily Cost
$0.27
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 Scottdale, your appliances are currently losing 13% efficiency due to mineral buildup.
| Appliance | In Scottdale | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.3 yrs | 8.5 yrs | -26% |
| Washing Machine | 9.9 yrs | 12 yrs | -17% |
| Water Heater | 11.6 yrs | 15 yrs | -23% |
Regional Water Comparison
How Scottdale compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Scottdale, Georgia | 101 mg/L | 5.8 ppt | 🟡 Moderately Hard | reservoir |
| Clarkston, Georgia | 102.5 mg/L | 5.9 ppt | 🟡 Moderately Hard | reservoir |
| Belvedere Park, Georgia | 147.5 mg/L | 9.2 ppt | 🟠 Hard | reservoir |
| Decatur, Georgia | 112 mg/L | 6.6 ppt | 🟡 Moderately Hard | reservoir |
| North Decatur, Georgia | 150 mg/L | 9.5 ppt | 🟠 Hard | reservoir |
National Benchmark
How Scottdale compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Scottdale | 101 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Scottdale's Water Unique?
Local geology and source profile
Scottdale, Georgia, in DeKalb County — a DeKalb County unincorporated community adjacent to Avondale Estates and Decatur in the east Atlanta suburbs — receives its water from DeKalb County Watershed Management, drawing from the Chattahoochee River through the north Georgia distribution.
The moderately hard 101 mg/L hardness and TDS of 197.6 mg/L reflect the DeKalb County supply's moderate Piedmont character — the Precambrian Piedmont Crystalline provides insoluble dilution, while the Cambrian Cartersville Formation contributes slightly calcareous mineral content from its phyllite and calcareous schist in the north Georgia Piedmont (compare Avondale Estates GA: 98/190 in DeKalb County comparable; Decatur GA: 103/205 in DeKalb County comparable; Scottdale consistent moderate from the same DeKalb County Chattahoochee River Precambrian supply). The Chattahoochee watershed — Precambrian Piedmont Crystalline (insoluble — primary dilutant), Cambrian Cartersville Formation (slightly calcareous — primary hardness contributor), and Quaternary Chattahoochee River alluvium (slightly calcareous — minor TDS).
At 101 mg/L with TDS 198, Scottdale's water is moderately hard — mild scale buildup. Semi-annual descaling is appropriate. The PFAS level of 5.8 ppt warrants a certified drinking water filter. Review DeKalb County Watershed Management's annual water quality report.
Geology & Source: Scottdale in DeKalb County draws from the DeKalb County Water on the Chattahoochee River supply (DeKalb County, north Georgia) — the Chattahoochee watershed draws from Precambrian Piedmont Crystalline (insoluble) and Cambrian Cartersville Formation (slightly calcareous) — Georgia DeKalb County Chattahoochee River Precambrian supply produces moderately hard water at 101 mg/L with TDS 197.6 mg/L.