Water Hardness in 73159
Oklahoma City, Oklahoma · Oklahoma County
Dataset updated March 9, 2026Matched to 9 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 9 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 73159
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 |
|---|---|---|---|
Oklahoma City OK1020902 | surface water | 154 PPM Moderately HardUSGS estimate: 216 PPM | |
Edmond Pwa OK1020723 | surface water | 154 PPM Moderately HardUSGS estimate: 202 PPM | |
Midwest City OK1020806 | surface water | 154 PPM Moderately HardUSGS estimate: 216 PPM | |
Tinker Air Force Base OK2005508 | groundwater | 154 PPM Moderately HardUSGS estimate: 162 PPM | |
Del City OK1020805 | surface water | 154 PPM Moderately HardUSGS estimate: 216 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 Oklahoma City, OK (73159).
Frequently Asked Questions
Is the water hard in Oklahoma City, OK (73159)?
The average water hardness in 73159 is 154 PPM (9 GPG), which is classified as moderately hard.
Do I need a water softener in 73159?
With hardness of 154 PPM, a water softener is worth considering for homes in 73159.
Is hard water in 73159 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 73159?
Zip code 73159 in Oklahoma City, Oklahoma is served by 9 water systems.
Learn More About Your Water
Do You Need a Water Softener? (Based on Your Water Hardness)
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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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We tested KDF, Vitamin C, and carbon shower filters for hard water. Here are the filters that actually reduce mineral buildup on hair and skin.
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