Water Hardness in Marion, IA
Iowa · 1 zip codes · 5 matched water systems
City avg (weighted): 201 PPM
Dataset updated March 9, 20265 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 5 matched water systems and 1 ZIP code. 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 Marion
These systems are matched to Marion, 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 |
|---|---|---|---|
Cedar Rapids Water Department IA5715093 | surface water | 200 PPM HardUSGS estimate: 251 PPM | |
Marion Municipal Water Dept IA5751035 | groundwater | 200 PPM HardUSGS estimate: 286 PPM | |
Eagle Ridge IA5751602 | groundwater | 286 PPM Very Hard | |
Marion Village IA5751601 | groundwater | 380 PPM Very Hard | |
Glenbrook Cove Area IA5751040 | surface water | 244 PPM Hard |
Zip Codes in Marion, 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 Marion, IA.
Frequently Asked Questions
How hard is the water in Marion, IA?
The citywide weighted average water hardness in Marion, IA is 201 PPM (11.8 GPG), classified as hard. This is based on 5 matched water systems. The gauge highlights Cedar Rapids Water Department, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Marion, IA?
With a citywide average hardness of 201 PPM, a water softener is recommended for homes in Marion. Confirm your tap reading before sizing equipment.
Is hard water in Marion, 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 Marion, IA?
Marion, Iowa is served by 5 matched water systems across 1 zip code.
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