How hard is the water in Glendale?

Glendale water hardness ranges from 9-17 GPG (160-294 PPM), classified as "Hard" to "Very Hard." The upper limit of 294 PPM makes Glendale one of the harder-water cities in the Phoenix metro when blends trend toward that upper range.

Where does Glendale get its water?

Glendale Water Services blends water from the Salt River Project, Central Arizona Project (Colorado River), and local groundwater sources. The hardness comes from calcium and magnesium dissolving as water contacts natural soil and rock formations.

Does any part of Glendale use Phoenix water?

Yes. A small "island" area within Glendale city limits near Loop 101 and 51st Avenue is actually served by City of Phoenix water rather than Glendale Water Services. If you're in this area, check with Phoenix for your water quality data.

Is Glendale water safe to drink?

Yes, Glendale water is safe to drink and meets all EPA and state safety standards. Water hardness (calcium and magnesium) poses no health risks—it's an aesthetic and practical concern.

Do I need a water softener in Glendale?

With hardness potentially reaching 17 GPG, most Glendale homes benefit from a water softener. The high end of Glendale's hardness range is comparable to some of the hardest water in the Phoenix metro area.

Water Hardness in Glendale, Arizona

Official water hardness data from Glendale Water Services

Hardness Level

13 GPG

227 PPM

Classification

Very Hard

Water Source

SRP + CAP

+ Groundwater

Last Updated

2024

CCR Report

What This Means For You

Glendale has robustly mineralized water, with hardness ranging from 9 to 17 GPG depending on blending. The upper end of this range (294 PPM) puts Glendale among the harder-water cities in the Phoenix metro.

Glendale's water is robustly mineralized, derived from the dissolution of calcium and magnesium as source water contacts natural soil and rock formations. Note: A small "island" within Glendale city limits (Loop 101/51st Ave area) is actually served by City of Phoenix water.

Note: A small area near Loop 101 and 51st Avenue is served by City of Phoenix water despite being within Glendale city limits. Check your water bill to confirm your provider.

Service Area Notes

Most of Glendale9-17 GPG (160-294 PPM) depending on blend

Loop 101/51st Ave areaServed by City of Phoenix water - may differ

Frequently Asked Questions

Official Source

Data from Glendale Water Services Consumer Confidence Report.

View Official Water Quality Report →