College Park Water Hardness & Quality Report (2026)
Water Hardness
7.1 grains per gallon
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
272 mg/L
Est. Daily Cost
$0.32
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 College Park, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In College Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.6 yrs | 8.5 yrs | -34% |
| Washing Machine | 9.1 yrs | 12 yrs | -24% |
| Water Heater | 10.8 yrs | 15 yrs | -28% |
Regional Water Comparison
How College Park compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ College Park, Georgia | 121 mg/L | 7.2 ppt | 🟠 Hard | reservoir |
| East Point, Georgia | 80.5 mg/L | 4.2 ppt | 🟡 Moderately Hard | reservoir |
| Forest Park, Georgia | 95 mg/L | 5.3 ppt | 🟡 Moderately Hard | reservoir |
| Riverdale, Georgia | 97.5 mg/L | 5.4 ppt | 🟡 Moderately Hard | reservoir |
| Atlanta, Georgia | 101 mg/L | 5.8 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How College Park compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ College Park | 121 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes College Park's Water Unique?
Local geology and source profile
College Park, Georgia, in Fulton County — a Fulton County city adjacent to East Point and Hapeville in the south Atlanta metro near Hartsfield-Jackson Atlanta International Airport — receives its water from the City of Atlanta water system, drawing from the Chattahoochee River (Fulton County) through the Atlanta metro distribution.
The moderately hard 121 mg/L hardness and TDS of 272 mg/L are consistent with the Atlanta metro Chattahoochee supply — similar to other Fulton County Atlanta-served communities (East Point: ~120 mg/L; Hapeville: ~121 mg/L). The Chattahoochee River at Fulton County drains the Georgia Blue Ridge — Precambrian Dahlonega Gold Belt (slightly calcareous metasedimentary — primary hardness contributor), Precambrian Sandy Springs Gneiss (insoluble), and Proterozoic Blue Ridge Thrust Sheet (slightly calcareous). The slightly calcareous Piedmont metasedimentary input produces the moderately hard Atlanta metro supply.
At 121 mg/L, College Park'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 7.2 ppt warrants a certified reverse osmosis drinking water filter — Hartsfield-Jackson Atlanta International Airport (Fulton County — AFFF, directly adjacent to College Park) and Dobbins Air Reserve Base (Cobb County — AFFF) contribute significantly to College Park's elevated readings.
Geology & Source: College Park in Fulton County draws from the City of Atlanta on the Chattahoochee River (Fulton County, west Atlanta metro) — the Chattahoochee at Fulton drains the Georgia Blue Ridge (Precambrian Dahlonega Gold Belt — slightly calcareous) — Georgia Fulton County Chattahoochee River Piedmont watershed produces moderately hard water at 121 mg/L with TDS 272 mg/L.