Water Hardness in Dubuque, IA
Iowa · 3 zip codes · 17 matched water systems
City avg (weighted): 200 PPM
Dataset updated March 9, 202617 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 17 matched water systems and 3 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 Dubuque
These systems are matched to Dubuque, IA. 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 |
|---|---|---|---|
Dubuque Water Works IA3126052 | groundwater | 200 PPM HardUSGS estimate: 250 PPM | |
Asbury Municipal Water System IA3102001 | groundwater | 200 PPM HardUSGS estimate: 250 PPM | |
Alpine Park IA3126605 | groundwater | 200 PPM HardUSGS estimate: 288 PPM | |
Terrace Heights IA3126604 | groundwater | 200 PPM HardUSGS estimate: 250 PPM | |
La Motte Water Supply IA4945052 | groundwater | 200 PPM HardUSGS estimate: 250 PPM |
Zip Codes in Dubuque, IA
What This Means For You
Recommendations are based on the displayed 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 Dubuque, IA.
Frequently Asked Questions
How hard is the water in Dubuque, IA?
The citywide weighted average water hardness in Dubuque, IA is 200 PPM (11.7 GPG), classified as hard. This is based on 17 matched water systems.
Do I need a water softener in Dubuque, IA?
With a citywide average hardness of 200 PPM, a water softener is recommended for homes in Dubuque. Confirm your tap reading before sizing equipment.
Is hard water in Dubuque, IA 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 Dubuque, IA?
Dubuque, Iowa is served by 17 matched water systems across 3 zip codes.
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