Jollyville Water Hardness & Quality Report (2026)
Water Hardness
10.5 grains per gallon
Source
mixed
pH Level
8
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
424.6 mg/L
Est. Daily Cost
$0.48
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 Jollyville, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Jollyville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 6.9 yrs | 12 yrs | -43% |
| Water Heater | 8.4 yrs | 15 yrs | -44% |
Regional Water Comparison
How Jollyville compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Jollyville, Texas | 180 mg/L | 6.9 ppt | 🔴 Very Hard | mixed |
| Cedar Park, Texas | 414 mg/L | 11.8 ppt | 🔴 Very Hard | mixed |
| Brushy Creek, Texas | 361.5 mg/L | 10.7 ppt | 🔴 Very Hard | mixed |
| Round Rock, Texas | 101 mg/L | 5.2 ppt | 🟡 Moderately Hard | mixed |
| Pflugerville, Texas | 434 mg/L | 12.2 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Jollyville compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Jollyville | 180 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Jollyville's Water Unique?
Local geology and source profile
Jollyville, Texas, in Williamson County — an unincorporated Williamson County community adjacent to Cedar Park and Round Rock in the north Austin metro — receives its municipal water from Austin Water Utility or the Williamson County Water Authority, drawing from Lake Travis or Lake Austin (Colorado River, Williamson County) through the north Austin distribution system.
The hard 180 mg/L hardness and elevated TDS of 424.6 mg/L reflect the north Austin Colorado River supply's Edwards Plateau calcareous character — consistent with the central Texas Hill Country water supplies. The Colorado River at Williamson County drains the Edwards Plateau — Cretaceous Edwards Group limestone (the dominant Texas Hill Country carbonate platform — high purity limestone), Cretaceous Georgetown Formation (calcareous), and Cretaceous Comanche Peak Formation (calcareous). The Edwards Plateau pure limestone drainage produces the hard north Austin supply.
At 180 mg/L, Jollyville's water is hard — scale builds steadily in kettles and appliances, dishwashers benefit from rinse aid, and water heaters should be descaled annually. Monthly descaling is recommended. The PFAS level of 6.9 ppt warrants a certified drinking water filter — the Williamson County north Austin suburban growth corridor and the Colorado River PFAS background from the central Texas industrial complex contribute to Jollyville's readings.
Geology & Source: Jollyville in Williamson County draws from Austin Water on the Colorado River (Williamson County, north Austin metro) — the Colorado at Austin drains the Edwards Plateau (Cretaceous Edwards Group limestone, Cretaceous Georgetown calcareous) — Texas Williamson County Colorado River Edwards Plateau Cretaceous limestone watershed produces hard water at 180 mg/L with TDS 424.6 mg/L in this Williamson County Texas community.