Union City Water Hardness & Quality Report (2026)
Water Hardness
7.6 grains per gallon
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.007 mg/L
✓ Below action level
TDS
306.6 mg/L
Est. Daily Cost
$0.35
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 Union City, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Union City | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.3 yrs | 8.5 yrs | -38% |
| Washing Machine | 8.8 yrs | 12 yrs | -27% |
| Water Heater | 10.4 yrs | 15 yrs | -31% |
Regional Water Comparison
How Union City compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Union City, Georgia | 129.5 mg/L | 7.8 ppt | 🟠 Hard | reservoir |
| Fairburn, Georgia | 126 mg/L | 7.6 ppt | 🟠 Hard | reservoir |
| College Park, Georgia | 121 mg/L | 7.2 ppt | 🟠 Hard | reservoir |
| Riverdale, Georgia | 97.5 mg/L | 5.4 ppt | 🟡 Moderately Hard | reservoir |
| South Fulton, Georgia | 136.5 mg/L | 8.4 ppt | 🟠 Hard | reservoir |
National Benchmark
How Union City compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Union City | 129.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Union City's Water Unique?
Local geology and source profile
Union City, Georgia, in Fulton County — a southwestern Fulton County city adjacent to Fairburn and College Park in the Atlanta outer ring, a growing African American-majority community in the outer Atlanta metro south corridor — receives its municipal water from the City of Union City Water Department or the Clayton County Water Authority, which draws from local reservoir impoundments in the southern Fulton-Clayton County corridor or from the Chattahoochee River through the Atlanta regional water supply system.
The moderately hard 129.5 mg/L hardness and TDS of 306.6 mg/L reflect the Atlanta-area supply's Piedmont geological character — consistent with the Chattahoochee River watershed's Georgia Piedmont geology. The Chattahoochee River headwaters drain the Blue Ridge (Precambrian crystalline terrain — very soft) and the Georgia Piedmont (the Brevard Zone mylonite and schist, the Chattahoochee Palisades formation, and Pine Mountain Belt amphibolite and gneiss). The Piedmont metamorphic terrain has minimal carbonate content but adds moderate dissolved silica and minor calcium contributions. The Atlanta metro's moderately hard supply reflects the Chattahoochee watershed's mixed crystalline geology combined with treatment and distribution system contributions.
At 129.5 mg/L, Union City'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 7.8 ppt warrants a certified drinking water filter — the Atlanta metro's military installations (Dobbins Air Reserve Base in Marietta — AFFF user on the Chattahoochee watershed), the Clayton County Amazon fulfillment and industrial park corridor, and the broader Atlanta metropolitan industrial legacy contribute to Union City's PFAS reading.
Geology & Source: Union City in Fulton County draws from the City of Union City Water or Clayton County Water Authority treating Campbellton Road reservoirs or the Chattahoochee River — the Chattahoochee drains the Blue Ridge (Precambrian crystalline) and the Piedmont (Brevard Zone gneiss, Pine Mountain Belt) — Piedmont crystalline and metamorphic watershed drainage produces moderately hard water at 129.5 mg/L with TDS 307 mg/L in this Fulton County Georgia city.