Water Hardness in Marshalltown, IA
Iowa · 1 zip codes · 10 matched water systems
City avg (weighted): 271 PPM
Dataset updated March 9, 202610 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 10 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 Marshalltown
These systems are matched to Marshalltown, 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 |
|---|---|---|---|
Ia Regional Utilities Assoc (Waverly) IA0990701 | groundwater | 200 PPM HardUSGS estimate: 380 PPM | |
Marshalltown Water Works IA6469042 | groundwater | 360 PPM Very Hard | |
Sunset Village IA6469601 | groundwater | 380 PPM Very Hard | |
Marshalltown Estates IA6400628 | groundwater | 360 PPM Very Hard | |
Andrew Water Supply IA4903050 | groundwater | 360 PPM Very Hard |
Zip Codes in Marshalltown, 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 Marshalltown, IA.
Frequently Asked Questions
How hard is the water in Marshalltown, IA?
The citywide weighted average water hardness in Marshalltown, IA is 271 PPM (15.8 GPG), classified as very hard. This is based on 10 matched water systems. The gauge highlights Ia Regional Utilities Assoc (Waverly), a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Marshalltown, IA?
With a citywide average hardness of 271 PPM, a water softener is recommended for homes in Marshalltown. Confirm your tap reading before sizing equipment.
Is hard water in Marshalltown, 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 Marshalltown, IA?
Marshalltown, Iowa is served by 10 matched water systems across 1 zip code.
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