Water Hardness in 78504
Mcallen, Texas · Hidalgo County
Dataset updated March 9, 2026Matched to 15 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 15 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.
Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.
Water Systems Serving 78504
These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
Mcallen Public Utility TX1080006 | surface water | 243 PPM HardUSGS estimate: 826 PPM | |
North Alamo Wsc TX1080029 | surface water | 243 PPM HardUSGS estimate: 826 PPM | |
City Of Edinburg TX1080004 | surface water | 243 PPM HardUSGS estimate: 826 PPM | |
City Of Pharr TX1080009 | surface water | 243 PPM HardUSGS estimate: 826 PPM | |
City Of Mission TX1080008 | surface water | 243 PPM HardUSGS estimate: 826 PPM |
Nearby Zip Codes
What This Means For You
Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.
Hard Water - Treatment Recommended
Your water is hard. Scale buildup is likely affecting your plumbing and appliances, reducing their lifespan and efficiency. A water softener is recommended to protect your home.
Recommended Products
Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | How to Test Your Water
Know your water hardness?
If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Mcallen, TX (78504).
Frequently Asked Questions
Is the water hard in Mcallen, TX (78504)?
The average water hardness in 78504 is 243 PPM (14.2 GPG), which is classified as hard.
Do I need a water softener in 78504?
With hardness of 243 PPM, a water softener is recommended for homes in 78504.
Is hard water in 78504 safe to drink?
Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.
How many water systems serve 78504?
Zip code 78504 in Mcallen, Texas is served by 15 water systems.
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