Water Hardness in Warwick, RI
Rhode Island · 3 zip codes · 8 matched water systems
City avg (weighted): 63 PPM
Dataset updated March 9, 20268 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Warwick, RI Water Hard or Soft?
The displayed hardness for Warwick, RI is 70 PPM (4.1 GPG) from Kent County Water Authority, classified as slightly hard. The citywide weighted average is 63 PPM.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 8 matched water systems and 3 ZIP codes. 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 Warwick
These systems are matched to Warwick, RI. 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 |
|---|---|---|---|
| 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 | |
| Cne - Hopkins Hill Road Entry Point RI2980452 | groundwater | 55 PPM SoftUSGS estimate: 20 PPM | |
| Castle Rock Condominiums RI1000035 | groundwater | 55 PPM SoftUSGS estimate: 20 PPM |
Zip Codes in Warwick, RI
What This Means For You
Use this city 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.
Frequently Asked Questions
How hard is the water in Warwick, RI?
The citywide weighted average water hardness in Warwick, RI is 63 PPM (3.7 GPG), classified as slightly hard. This is based on 8 matched water systems. The gauge highlights Kent County Water Authority, a verified treated-water system, because individual systems can differ from the citywide average.
Do I need a water softener in Warwick, RI?
At 63 PPM, the citywide average is relatively soft. A water softener is generally not necessary.
Is hard water in Warwick, RI 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 Warwick, RI?
Warwick, Rhode Island is served by 8 matched water systems across 3 zip codes.
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.
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