Water Hardness in 86001
Flagstaff, Arizona · Coconino 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 86001
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 |
|---|---|---|---|
| Flagstaff City Of AZ0403008 | surface water | 80 PPM Slightly HardUSGS estimate: 204 PPM | |
| Grand Canyon National Park AZ0403702 | groundwater | 80 PPM Slightly HardUSGS estimate: 236 PPM | |
| Arizona Water Co - Sedona AZ0403003 | groundwater | 80 PPM Slightly HardUSGS estimate: 326 PPM | |
| Doney Park Water AZ0403005 | groundwater | 80 PPM Slightly HardUSGS estimate: 263 PPM | |
| Kachina Village Dwid AZ0403013 | groundwater | 80 PPM Slightly HardUSGS estimate: 228 PPM |
Nearby Zip Codes
What This Means For You
Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.
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 Flagstaff, AZ (86001).
Frequently Asked Questions
Is the water hard in Flagstaff, AZ (86001)?
The average water hardness in 86001 is 80 PPM (4.7 GPG), which is classified as slightly hard.
Do I need a water softener in 86001?
At 80 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 86001 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 86001?
Zip code 86001 in Flagstaff, Arizona is served by 12 water systems.
Learn More About Your Water
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