Water Hardness in Saint Paul, MN
Minnesota · 8 zip codes · 11 matched water systems
City avg (weighted): 256 PPM
Dataset updated March 9, 202611 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
How this city reading is built
This city reading is a weighted rollup across 11 matched water systems and 8 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 Saint Paul
These systems are matched to Saint Paul, MN. 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 |
|---|---|---|---|
Saint Paul Regional Water Services MN1620026 | surface water | 256 PPM Very HardUSGS estimate: 182 PPM | |
Roseville MN1620013 | surface water | 256 PPM Very HardUSGS estimate: 182 PPM | |
Shoreview MN1620020 | groundwater | 256 PPM Very HardUSGS estimate: 438 PPM | |
White Bear Lake MN1620024 | groundwater | 256 PPM Very HardUSGS estimate: 260 PPM | |
New Brighton MN1620009 | groundwater | 256 PPM Very HardUSGS estimate: 438 PPM |
Zip Codes in Saint Paul, MN
What This Means For You
Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.
Very Hard Water - Treatment Strongly Recommended
Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.
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 Saint Paul, MN.
Frequently Asked Questions
How hard is the water in Saint Paul, MN?
The citywide weighted average water hardness in Saint Paul, MN is 256 PPM (15 GPG), classified as very hard. This is based on 11 matched water systems.
Do I need a water softener in Saint Paul, MN?
With a citywide average hardness of 256 PPM, a water softener is recommended for homes in Saint Paul. Confirm your tap reading before sizing equipment.
Is hard water in Saint Paul, MN 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 Saint Paul, MN?
Saint Paul, Minnesota is served by 11 matched water systems across 8 zip codes.
Learn More About Your Water
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