Del Rio Water Hardness & Quality Report (2026)
Water Hardness
16.1 grains per gallon
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
735 mg/L
Est. Daily Cost
$0.73
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 Del Rio, your appliances are currently losing 37% efficiency due to mineral buildup.
| Appliance | In Del Rio | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.4 yrs | 12 yrs | -72% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Del Rio compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Del Rio, Texas | 275.5 mg/L | 8.9 ppt | 🔴 Very Hard | mixed |
| Eagle Pass, Texas | 361.5 mg/L | 10.7 ppt | 🔴 Very Hard | mixed |
| Uvalde, Texas | 343.5 mg/L | 10.3 ppt | 🔴 Very Hard | mixed |
| Kerrville, Texas | 412.5 mg/L | 11.8 ppt | 🔴 Very Hard | mixed |
| San Angelo, Texas | 221.5 mg/L | 7.8 ppt | 🔴 Very Hard | mixed |
National Benchmark
How Del Rio compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Del Rio | 275.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Del Rio's Water Unique?
Local geology and source profile
Del Rio, Texas, the Val Verde County seat — a major southwest Texas border city on the Rio Grande directly across from Ciudad Acuña, Coahuila, Mexico (Del Rio is a major US–Mexico border crossing — a key commercial gateway for south Texas–northern Mexico trade), home of Laughlin Air Force Base (the largest US Air Force pilot training base — Laughlin AFB trains more T-38 jet pilots than any other Air Force installation, essential to the Del Rio economy), adjacent to Lake Amistad (a major international US–Mexico reservoir on the Rio Grande — a significant water resource and recreation site), and a diverse Val Verde County community — draws its municipal water supply from the Edwards–Trinity Aquifer wells via the City of Del Rio Water Division. Water hardness in Del Rio measures 275.5 mg/L — classified as very hard.
Del Rio's very hard supply reflects the southwest Texas Edwards Plateau's highly calcareous Cretaceous limestone aquifer geology. The Edwards–Trinity Aquifer at Del Rio–Val Verde County draws from: the Cretaceous Edwards Limestone (highly calcareous marine limestone — the primary southwest Texas carbonate aquifer, one of the most calcareous aquifer systems in the US); the Cretaceous Georgetown Formation (calcareous limestone and marl); and the Devil's River Limestone (highly calcareous semi-arid Cretaceous limestone of the Val Verde County borderland). City of Del Rio applies limited softening, producing the very hard 275.5 mg/L.
At 275.5 mg/L, Del Rio residents face severe hard water challenges. Weekly descaling and appliance protection measures are strongly recommended. City of Del Rio Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: Groundwater from the Edwards–Trinity (Plateau) Aquifer and Devil's River alluvial wells via the City of Del Rio Water Division — the Val Verde County southwest Texas Rio Grande borderland (Cretaceous Edwards Limestone and Georgetown Formation — the highly calcareous southwest Texas Edwards Plateau carbonate; Rio Grande borderland calcareous semi-arid geology; limited softening); very hard supply at 275.5 mg/L in Val Verde County.