Water Hardness in 50313
Des Moines, Iowa · Polk County
Dataset updated March 9, 2026Matched to 12 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 12 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 50313
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 |
|---|---|---|---|
| Des Moines Water Works IA7727031 | surface water | 140 PPM Moderately HardUSGS estimate: 430 PPM | |
| Ankeny, City Of IA7709053 | surface water | 140 PPM Moderately HardUSGS estimate: 411 PPM | |
| West Des Moines Water Works IA7785007 | surface water | 140 PPM Moderately HardUSGS estimate: 430 PPM | |
| Urbandale Water Utility IA7780042 | surface water | 140 PPM Moderately HardUSGS estimate: 411 PPM | |
| Johnston Municipal Water Supply IA7740011 | surface water | 140 PPM Moderately HardUSGS estimate: 411 PPM |
Nearby Zip Codes
What This Means For You
Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.
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 Des Moines, IA (50313).
Frequently Asked Questions
Is the water hard in Des Moines, IA (50313)?
The average water hardness in 50313 is 140 PPM (8.2 GPG), which is classified as moderately hard.
Do I need a water softener in 50313?
With hardness of 140 PPM, a water softener is worth considering for homes in 50313.
Is hard water in 50313 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 50313?
Zip code 50313 in Des Moines, Iowa is served by 12 water systems.
Learn More About Your Water
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