Water Hardness in Oro Valley, AZ
Arizona · 2 zip codes · 16 matched water systems
City avg (weighted): 219 PPM
Dataset updated March 9, 202616 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
How this city reading is built
This city reading is a weighted rollup across 16 matched water systems and 2 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
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 in Oro Valley
These systems are matched to Oro Valley, AZ. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
Tucson City Of AZ0410112 | groundwater | 220 PPM HardUSGS estimate: 203 PPM | |
Metropolitan Dwid AZ0410076 | groundwater | 220 PPM HardUSGS estimate: 203 PPM | |
Oro Valley Water Utility AZ0410164 | groundwater | 220 PPM HardUSGS estimate: 91 PPM | |
Community Wc Of Green Valley AZ0410004 | groundwater | 220 PPM HardUSGS estimate: 228 PPM | |
Usaf Davis Monthan Afb AZ0420549 | groundwater | 220 PPM HardUSGS estimate: 149 PPM |
Zip Codes in Oro Valley, AZ
What This Means For You
Recommendations are based on the displayed 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 Oro Valley, AZ.
Frequently Asked Questions
How hard is the water in Oro Valley, AZ?
The citywide weighted average water hardness in Oro Valley, AZ is 219 PPM (12.8 GPG), classified as hard. This is based on 16 matched water systems. The gauge highlights Tucson City Of, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Oro Valley, AZ?
With a citywide average hardness of 219 PPM, a water softener is recommended for homes in Oro Valley. Confirm your tap reading before sizing equipment.
Is hard water in Oro Valley, AZ 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 Oro Valley, AZ?
Oro Valley, Arizona is served by 16 matched water systems across 2 zip codes.
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