Arkadelphia Water Hardness & Quality Report (2026)
Water Hardness
3.4 grains per gallon
Source
river
pH Level
7.3
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
93.2 mg/L
Est. Daily Cost
$0.16
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 Arkadelphia, your appliances are currently losing 8% efficiency due to mineral buildup.
| Appliance | In Arkadelphia | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.7 yrs | 8.5 yrs | -9% |
| Washing Machine | 11.4 yrs | 12 yrs | -5% |
| Water Heater | 13.2 yrs | 15 yrs | -12% |
Regional Water Comparison
How Arkadelphia compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Arkadelphia, Arkansas | 59 mg/L | 2.7 ppt | 🟢 Soft | river |
| Malvern, Arkansas | 67 mg/L | 2.9 ppt | 🟡 Moderately Hard | river |
| Hot Springs, Arkansas | 82.5 mg/L | 3.2 ppt | 🟡 Moderately Hard | river |
| Hot Springs Village, Arkansas | 84 mg/L | 3.2 ppt | 🟡 Moderately Hard | river |
| Camden, Arkansas | 222 mg/L | 5.9 ppt | 🔴 Very Hard | river |
National Benchmark
How Arkadelphia compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Arkadelphia | 59 mg/L | 🟢 None |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Arkadelphia's Water Unique?
Local geology and source profile
Arkadelphia, Arkansas, in Clark County — the Clark County seat adjacent to Hot Springs and Gurdon on the Ouachita River in southwest Arkansas — receives its water from the City of Arkadelphia Water Department, drawing from the Ouachita River through the southwest Arkansas distribution.
The soft 59 mg/L hardness and low TDS of 93.2 mg/L reflect the Clark County supply's soft Ouachita Mountains character — the Cambrian Collier Shale and Ordovician Mazarn Formation are largely insoluble shale and sandstone formations in the Ouachita Mountains, contributing negligible dissolved mineral content to the Ouachita River headwaters (compare Hot Springs AR: 56/87 in Garland County comparable; Gurdon AR: 61/98 in Clark County comparable; Arkadelphia consistent soft from the same Clark County Ouachita River Cambrian insoluble supply). The Ouachita River — Cambrian Collier Shale (insoluble — primary dilutant), Ordovician Mazarn Formation (insoluble — secondary dilutant), and Quaternary Ouachita River alluvium (slightly calcareous — minor TDS).
At 59 mg/L with TDS 93, Arkadelphia's water is soft — minimal scale buildup. Annual descaling is appropriate. The PFAS level of 2.7 ppt is very low — an excellent result for southwest Arkansas. Review the City of Arkadelphia's annual water quality report.
Geology & Source: Arkadelphia in Clark County draws from the Arkadelphia Water on the Ouachita River (Clark County, southwest Arkansas) — the Ouachita River drains Cambrian Collier Shale (insoluble) and Ordovician Mazarn Formation (insoluble) — Arkansas Clark County Ouachita River Cambrian insoluble supply produces soft water at 59 mg/L with TDS 93.2 mg/L.