Royse City Water Hardness & Quality Report (2026)
Water Hardness
6.8 grains per gallon
Source
mixed
pH Level
7.7
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
252.1 mg/L
Est. Daily Cost
$0.31
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 Royse City, your appliances are currently losing 16% efficiency due to mineral buildup.
| Appliance | In Royse City | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.7 yrs | 8.5 yrs | -33% |
| Washing Machine | 9.3 yrs | 12 yrs | -22% |
| Water Heater | 10.9 yrs | 15 yrs | -27% |
Regional Water Comparison
How Royse City compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Royse City, Texas | 117 mg/L | 5.6 ppt | 🟡 Moderately Hard | mixed |
| Rockwall, Texas | 367.5 mg/L | 10.8 ppt | 🔴 Very Hard | mixed |
| Wylie, Texas | 256.5 mg/L | 8.5 ppt | 🔴 Very Hard | mixed |
| Rowlett, Texas | 110.5 mg/L | 5.4 ppt | 🟡 Moderately Hard | mixed |
| Terrell, Texas | 327.5 mg/L | 10 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Royse City compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Royse City | 117 mg/L | 🟡 Low |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Royse City's Water Unique?
Local geology and source profile
Royse City, Texas, in Rockwall County — a Rockwall County city adjacent to Fate and Rockwall in the eastern Dallas metroplex — receives its water from the City of Royse City Water Department or North Texas MWD, drawing from Lake Lavon on the East Fork Trinity River through the north-central Texas distribution.
The moderately hard 117 mg/L hardness and TDS of 252.1 mg/L reflect the Rockwall County East Fork Trinity supply's moderate calcareous character — the Cretaceous Austin Chalk and Taylor Formation are calcareous formations in the northeast Texas Blackland Prairie Cretaceous outcrop belt (compare Fate TX: 115/248 in Rockwall County comparable; Rockwall TX: 119/256 in Rockwall County comparable; Royse City consistent moderate from the same Rockwall County Lake Lavon Cretaceous calcareous supply). The East Fork Trinity watershed — Cretaceous Austin Chalk (calcareous — primary hardness contributor), Cretaceous Taylor Formation (slightly calcareous — secondary contributor), and Quaternary Trinity River alluvium (calcareous — TDS contributor).
At 117 mg/L with TDS 252, Royse City's water is moderately hard — scale builds in appliances over months. Semi-annual descaling is appropriate. The PFAS level of 5.6 ppt is moderate — a certified drinking water filter provides added protection. Review the City of Royse City's annual water quality report.
Geology & Source: Royse City in Rockwall County draws from the Royse City Water on Lake Lavon (Rockwall County, north-central Texas) — the East Fork Trinity watershed at Rockwall County drains Cretaceous Austin Chalk (calcareous) and Cretaceous Taylor Formation (slightly calcareous) — Texas Rockwall County Lake Lavon Cretaceous calcareous supply produces moderately hard water at 117 mg/L with TDS 252.1 mg/L.