Water Hardness in 59741
Manhattan, Montana · Gallatin 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 59741
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 |
|---|---|---|---|
Bozeman City Of MT0000161 | surface water | 100 PPM Slightly HardUSGS estimate: 81 PPM | |
Belgrade City Of MT0000136 | groundwater | 100 PPM Slightly HardUSGS estimate: 162 PPM | |
Manhattan Town Of MT0000285 | groundwater | 227 PPM Hard | |
Churchill North Subdivision MT0004431 | groundwater | 227 PPM Hard | |
Manhattan Camper Court MT0001821 | groundwater | 227 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.
Slightly Hard Water
Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.
Recommended Products
Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 Manhattan, MT (59741).
Frequently Asked Questions
Is the water hard in Manhattan, MT (59741)?
The average water hardness in 59741 is 105 PPM (6.1 GPG), which is classified as slightly hard.
Do I need a water softener in 59741?
At 105 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 59741 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 59741?
Zip code 59741 in Manhattan, Montana is served by 10 water systems.
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