Water Hardness in 77076
Houston, Texas · Harris County
Dataset updated March 9, 2026Matched to 25 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 25 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 77076
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 |
|---|---|---|---|
City Of Houston TX1010013 | surface water | 135 PPM Moderately HardUSGS estimate: 152 PPM | |
City Of Pasadena TX1010293 | surface water | 135 PPM Moderately HardUSGS estimate: 152 PPM | |
Clear Lake City Water Authority TX1010056 | surface water | 135 PPM Moderately HardUSGS estimate: 113 PPM | |
City Of Baytown TX1010003 | surface water | 135 PPM Moderately HardUSGS estimate: 152 PPM | |
City Of Houston Ud 5 - Kingwood TX1010348 | groundwater | 135 PPM Moderately HardUSGS estimate: 152 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.
Moderately Hard Water
Your water is moderately hard. You're likely seeing scale buildup on fixtures, spotty dishes, and may notice dry skin or hair. A water softener or conditioner can help.
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 Houston, TX (77076).
Frequently Asked Questions
Is the water hard in Houston, TX (77076)?
The average water hardness in 77076 is 135 PPM (7.9 GPG), which is classified as moderately hard.
Do I need a water softener in 77076?
With hardness of 135 PPM, a water softener is worth considering for homes in 77076.
Is hard water in 77076 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 77076?
Zip code 77076 in Houston, Texas is served by 25 water systems.
Learn More About Your Water
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Salt-based softeners remove hardness minerals. Salt-free conditioners prevent scale but don't soften. Here's how to choose based on your water hardness level.
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