Water Hardness in Missoula, MT
Montana · 5 zip codes · 51 matched water systems
City avg (weighted): 176 PPM
Dataset updated March 9, 202651 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Missoula, MT Water Hard or Soft?
The displayed hardness for Missoula, MT is 176 PPM (10.3 GPG) from Missoula Water, classified as moderately hard. The citywide weighted average is 176 PPM.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 51 matched water systems and 5 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
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 Missoula
These systems are matched to Missoula, MT. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Missoula Water MT0000294 | groundwater | 176 PPM Moderately HardUSGS estimate: 108 PPM | |
| Westview Mobile Home Park MT0000437 | groundwater | 176 PPM Moderately HardUSGS estimate: 108 PPM | |
| Phantom Hills Water System MT0004379 | groundwater | 176 PPM Moderately HardUSGS estimate: 108 PPM | |
| Travois Village Mobile Park MT0003909 | groundwater | 176 PPM Moderately HardUSGS estimate: 66 PPM | |
| Greenfield Mobile Home Park MT0000373 | groundwater | 176 PPM Moderately HardUSGS estimate: 108 PPM |
Zip Codes in Missoula, MT
What This Means For You
Use this city 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 Missoula, MT.
Frequently Asked Questions
How hard is the water in Missoula, MT?
The citywide weighted average water hardness in Missoula, MT is 176 PPM (10.3 GPG), classified as moderately hard. This is based on 51 matched water systems.
Do I need a water softener in Missoula, MT?
With a citywide average hardness of 176 PPM, a water softener is worth considering for homes in Missoula. Confirm your tap reading before sizing equipment.
Is hard water in Missoula, 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 Missoula, MT?
Missoula, Montana is served by 51 matched water systems across 5 zip codes.
Learn More About Your Water
How to Test Water Hardness at Home
Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.
8 min readHard Water vs Soft Water: Key Differences
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10 min readPPM to GPG Converter + Water Hardness Scale Explained
Convert between PPM and GPG instantly. Understand the USGS water hardness scale and what your numbers mean for your home.
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