Water Hardness in Glendale, Arizona
Glendale Water Services
Utility-reported average
13.9 GPG
237 ppm as calcium carbonate
Source period
2025
Source checked 2026-09-15
What the local data tells you
The city reports a 237 ppm average and a 93–317 ppm range for 2025. We convert the ppm average consistently to 13.9 GPG; the report lists 13.8 GPG. This replaces an earlier citation to a Phoenix-operated service area, which did not represent Glendale Water Services.
Water sources listed for Glendale: Salt River Project, Central Arizona Project, and groundwater. Source blends, sampling locations and treatment can affect the hardness at a particular property.
Source and coverage
2025 Glendale Water Quality Report, page 5Public water system ID: AZ0407093
This is municipal water information, not a test of your home. Check the utility on your water bill, particularly near city boundaries or if you use a private well.
How we verify sources and handle estimatesChoosing a softener for your home
Start with a hardness test on the water entering the softener. Next, estimate the household water use that actually passes through it. Outdoor irrigation is usually a separate demand and should not automatically be included.
A softener needs enough usable exchange capacity between regenerations and enough service flow for fixtures used at the same time. The advertised grain capacity is not necessarily the capacity at an efficient salt setting. Compare the manufacturer's capacity and salt-dose table, ongoing salt use, installation requirements and warranty.