Water Hardness in 60433
Joliet, Illinois · Will County
Dataset updated March 9, 2026Matched to 18 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 18 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 60433
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 |
|---|---|---|---|
| Joliet IL1970450 | groundwater | 148 PPM Moderately HardUSGS estimate: 286 PPM | |
| Il American-West Suburban IL1974151 | surface water | 148 PPM Moderately HardUSGS estimate: 207 PPM | |
| Romeoville IL1970900 | groundwater | 148 PPM Moderately HardUSGS estimate: 157 PPM | |
| Plainfield IL1970800 | surface water | 148 PPM Moderately HardUSGS estimate: 224 PPM | |
| New Lenox IL1970700 | surface water | 148 PPM Moderately HardUSGS estimate: 224 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 Joliet, IL (60433).
Frequently Asked Questions
Is the water hard in Joliet, IL (60433)?
The average water hardness in 60433 is 148 PPM (8.7 GPG), which is classified as moderately hard.
Do I need a water softener in 60433?
With hardness of 148 PPM, a water softener is worth considering for homes in 60433.
Is hard water in 60433 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 60433?
Zip code 60433 in Joliet, Illinois is served by 18 water systems.
Learn More About Your Water
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