Water Hardness in 80126
Highlands Ranch, Colorado · Douglas County
Dataset updated March 9, 2026Matched to 12 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 12 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 80126
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 |
|---|---|---|---|
Castle Rock Town Of CO0118010 | surface water | 200 PPM HardUSGS estimate: 42 PPM | |
Highlands Ranch Wsd CO0118015 | surface water | 200 PPM HardUSGS estimate: 108 PPM | |
Parker Wsd CO0118040 | surface water | 200 PPM HardUSGS estimate: 102 PPM | |
Meridian Md CO0218015 | surface water | 200 PPM HardUSGS estimate: 102 PPM | |
Stonegate Md CO0118076 | surface water | 200 PPM HardUSGS estimate: 102 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 Highlands Ranch, CO (80126).
Frequently Asked Questions
Is the water hard in Highlands Ranch, CO (80126)?
The average water hardness in 80126 is 200 PPM (11.7 GPG), which is classified as hard.
Do I need a water softener in 80126?
With hardness of 200 PPM, a water softener is recommended for homes in 80126.
Is hard water in 80126 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 80126?
Zip code 80126 in Highlands Ranch, Colorado is served by 12 water systems.
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