Pharr Water Hardness & Quality Report (2026)
Water Hardness
25.4 grains per gallon
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
1388.1 mg/L
Est. Daily Cost
$1.00
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 Pharr, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Pharr | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Pharr compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Pharr, Texas | 435.5 mg/L | 12.3 ppt | 🔴 Very Hard | mixed |
| San Juan, Texas | 432.5 mg/L | 12.2 ppt | 🔴 Very Hard | mixed |
| McAllen, Texas | 266 mg/L | 8.7 ppt | 🔴 Very Hard | mixed |
| Alamo, Texas | 120 mg/L | 5.6 ppt | 🟠 Hard | mixed |
| Edinburg, Texas | 140 mg/L | 6 ppt | 🟠 Hard | mixed |
National Benchmark
How Pharr compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Pharr | 435.5 mg/L | 🔴 High |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Pharr's Water Unique?
Local geology and source profile
Pharr, Texas, in Hidalgo County in the Lower Rio Grande Valley adjacent to McAllen and Edinburg, draws its municipal water supply from the Rio Grande via the City of Pharr Water Division and the Hidalgo County Irrigation District regional supply system, treating Rio Grande water at the Pharr Water Treatment Plant in the McAllen–Edinburg–Pharr metropolitan area. Water hardness in Pharr reaches 435.5 mg/L — classified as extremely hard, among the highest municipal water hardness readings in the United States.
Pharr's extreme hardness reflects the Rio Grande's maximum accumulated mineral load at the extreme Lower Valley reach. The Rio Grande at the Pharr–McAllen area, just miles from the Gulf of Mexico, has traveled 1,896 miles from the Colorado Rockies and collected maximum mineral input from its entire basin: the Trans-Pecos Permian Castile Formation and Rustler Formation gypsiferous evaporites (contributing sulfate and calcium from the vast west Texas gypsum/anhydrite terrain); the Chihuahuan Desert calcareous alluvial plain (immense calcium carbonate concentration from the Sonoran/Chihuahuan aridity); the Texas Big Bend Cretaceous limestone (Boquillas Formation, Santa Elena Limestone); and the highly concentrated Rio Conchos tributary from Chihuahua's Sierra Madre calcareous formations. The extreme Lower Valley location, combined with the semi-arid concentration effect, produces the maximum Rio Grande hardness.
At 435.5 mg/L, Pharr residents face severe hard water challenges. Scale deposits form within days on all fixtures and appliances. Weekly descaling with commercial citric acid products is essential. Water heaters require semi-annual professional inspection. City of Pharr Water Division consistently delivers water meeting all Texas TCEQ and EPA Safe Drinking Water Act requirements.
Geology & Source: River supply from the Rio Grande via the Pharr Water Division and Hidalgo County regional supply — the Rio Grande at the extreme Lower Valley Pharr reach near the Rio Grande–Gulf of Mexico estuary; extremely hard supply at 435.5 mg/L — reflecting maximum Rio Grande Basin mineral accumulation including Chihuahuan Desert evaporite, Trans-Pecos gypsum, and extended semi-arid concentration.