Water Hardness in 64120
Kansas City, Missouri · Jackson County
Dataset updated March 9, 2026Matched to 10 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 10 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 64120
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 |
|---|---|---|---|
| Kansas City Pws MO1010415 | surface water | 260 PPM Very HardUSGS estimate: 243 PPM | |
| Independence Pws MO1010399 | groundwater | 260 PPM Very HardUSGS estimate: 247 PPM | |
| Lees Summit Pws MO1010459 | surface water | 260 PPM Very HardUSGS estimate: 243 PPM | |
| Blue Springs Pws MO1010080 | surface water | 260 PPM Very HardUSGS estimate: 247 PPM | |
| Jackson County Pwsd 1 MO1024275 | groundwater | 260 PPM Very HardUSGS estimate: 243 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 Kansas City, MO (64120).
Frequently Asked Questions
Is the water hard in Kansas City, MO (64120)?
The average water hardness in 64120 is 260 PPM (15.2 GPG), which is classified as very hard.
Do I need a water softener in 64120?
With hardness of 260 PPM, a water softener is recommended for homes in 64120.
Is hard water in 64120 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 64120?
Zip code 64120 in Kansas City, Missouri is served by 10 water systems.
Learn More About Your Water
How to Test Water Hardness at Home
Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.
8 min readWater Hardness Scale: PPM and GPG Chart
Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.
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