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Water Hardness in Polson, MT

Montana · 1 zip codes · 10 matched water systems

205 PPM
12 GPG
Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 202610 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 10 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
10 USGS-backed sources
10 matched systems total for this city; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

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 Polson

These systems are matched to Polson, MT. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

10 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Polson City Of
MT0000308
Hard
205 PPMgroundwater5,300 servedHigh Confidence — USGS Monitoring
Jette Meadows Lake Co W And S Dist
MT0003100
Hard
205 PPMgroundwater375 servedHigh Confidence — USGS Monitoring
Jette Lake Landowners Association
MT0003102
Hard
205 PPMgroundwater295 servedHigh Confidence — USGS Monitoring
Paradise Pines
MT0001018
Hard
205 PPMgroundwater95 servedHigh Confidence — USGS Monitoring
Clearview Heights Water Assn
MT0003233
Hard
205 PPMgroundwater90 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Polson, MT

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Polson, MT.

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Frequently Asked Questions

How hard is the water in Polson, MT?

The citywide weighted average water hardness in Polson, MT is 205 PPM (12 GPG), classified as hard. This is based on 10 matched water systems.

Do I need a water softener in Polson, MT?

With a citywide average hardness of 205 PPM, a water softener is recommended for homes in Polson. Confirm your tap reading before sizing equipment.

Is hard water in Polson, MT 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 Polson, MT?

Polson, Montana is served by 10 matched water systems across 1 zip code.

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