Water Hardness in 59912
Columbia Falls, Montana · Flathead 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 59912
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 |
|---|---|---|---|
| Kalispell Public Works MT0000259 | groundwater | 100 PPM Slightly HardUSGS estimate: 205 PPM | |
| Whitefish City Of MT0000357 | surface water | 100 PPM Slightly HardUSGS estimate: 78 PPM | |
| Columbia Falls City Of MT0000181 | groundwater | 78 PPM Slightly Hard | |
| Meadow Lake Co Water And Sewer District MT0000914 | groundwater | 78 PPM Slightly Hard | |
| Flathead Co Water District No 8 MT0000261 | groundwater | 78 PPM Slightly Hard |
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 Columbia Falls, MT (59912).
Frequently Asked Questions
Is the water hard in Columbia Falls, MT (59912)?
The average water hardness in 59912 is 96 PPM (5.6 GPG), which is classified as slightly hard.
Do I need a water softener in 59912?
At 96 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 59912 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 59912?
Zip code 59912 in Columbia Falls, Montana is served by 25 water systems.
Learn More About Your Water
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