Water Hardness in 59860
Polson, Montana · Lake County
Dataset updated March 9, 2026Matched to 10 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 10 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 59860
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 |
|---|---|---|---|
Polson City Of MT0000308 | groundwater | 205 PPM Hard | |
Jette Meadows Lake Co W And S Dist MT0003100 | groundwater | 205 PPM Hard | |
Jette Lake Landowners Association MT0003102 | groundwater | 205 PPM Hard | |
Paradise Pines MT0001018 | groundwater | 205 PPM Hard | |
Clearview Heights Water Assn MT0003233 | groundwater | 205 PPM Hard |
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 Polson, MT (59860).
Frequently Asked Questions
Is the water hard in Polson, MT (59860)?
The average water hardness in 59860 is 205 PPM (12 GPG), which is classified as hard.
Do I need a water softener in 59860?
With hardness of 205 PPM, a water softener is recommended for homes in 59860.
Is hard water in 59860 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 59860?
Zip code 59860 in Polson, Montana is served by 10 water systems.
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