Water Hardness in 02889
Warwick, Rhode Island · Kent County
Dataset updated March 9, 2026Matched to 5 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 5 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 02889
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 |
|---|---|---|---|
| Kent County Water Authority RI1559511 | surface water | 70 PPM Slightly HardUSGS estimate: 11 PPM | |
| Warwick-City Of RI1615627 | surface water | 55 PPM SoftUSGS estimate: 20 PPM | |
| Warwick-Potowomut RI1900051 | surface water | 55 PPM SoftUSGS estimate: 20 PPM | |
| Paige Associates RI1900020 | groundwater | 55 PPM SoftUSGS estimate: 20 PPM | |
| Blueberry Heights Housing Cooperative Co RI2814410 | groundwater | 55 PPM SoftUSGS estimate: 20 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 Warwick, RI (02889).
Frequently Asked Questions
Is the water hard in Warwick, RI (02889)?
The average water hardness in 02889 is 63 PPM (3.7 GPG), which is classified as slightly hard.
Do I need a water softener in 02889?
At 63 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 02889 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 02889?
Zip code 02889 in Warwick, Rhode Island is served by 5 water systems.
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