How does Glendale's water compare to the national average?

The USA national average is 151 mg/L. Glendale (≈ 120–179 mg/L) is 1 mg/L softer than average.

Glendale Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

neutral = 7.0

Lead

0 mg/L

✓ Below action level

TDS

525 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · est.

0–60

mg/L

Soft

61–120

mg/L

Moderately Hard

121–180

mg/L

Hard

180+

mg/L

Very Hard

Appliance Damage Report

In Glendale, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Glendale	Soft Water City	Efficiency Loss
Kettle	6.8 yrs	8.5 yrs	-20%
Washing Machine	9.6 yrs	12 yrs	-20%
Water Heater	12 yrs	15 yrs	-20%

Regional Water Comparison

How Glendale compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Glendale, Arizona	≈ 120–179 mg/L	10 ppt	🟠 Hard	groundwater
Maryvale, Arizona	≈ 120–179 mg/L	5.3 ppt	🟠 Hard	mixed
Alhambra, Arizona	≈ 180+ mg/L	4.5 ppt	🔴 Very Hard	mixed
Peoria, Arizona	≈ 120–179 mg/L	74.1 ppt	🟠 Hard	reservoir
Sun City, Arizona	≈ 120–179 mg/L	4.3 ppt	🟠 Hard	groundwater

National Benchmark

How Glendale compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Glendale	≈ 120–179 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

Bring Scarsdale-quality water to your Glendale home

Shop water softeners on Amazon.com →

Shop Now

What Makes Glendale's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 525 mg/LpH: 8

City of Glendale Water Services provides drinking water to approximately 250,000 residents in Glendale, Arizona, located in Maricopa County. The utility sources water from a mix of surface water via Salt River Project (SRP) canals from the Salt-Verde River system and the Central Arizona Project (CAP) aqueduct from the Colorado River, supplemented by groundwater from the Salt River Valley aquifer. Primary treatment occurs at SRP and CAP facilities, with additional blending and disinfection at Glendale's own facilities including the Hedgepeth Hills Water Treatment Plant.

The supply originates from the Salt River watershed in the Mogollon Rim highlands and the expansive Colorado River basin, traversing diverse terrains. Underlying geology includes the Basin and Range aquifers with alluvial fills over Proterozoic basement rocks and Tertiary volcanics. This setting promotes a hard supply through mineral leaching from limestone and evaporite deposits, elevating calcium and magnesium levels characteristic of Arizona's groundwater; arid basin weathering further concentrates dissolved solids in the supply.

Hard water in Glendale leads to scale buildup in pipes, water heaters, dishwashers, and washing machines, reducing efficiency and lifespan. Affected appliances require more frequent descaling; maintenance tips include regular flushing of hot water systems and using scale inhibitors. A water softener is recommended to mitigate spotting on fixtures, improve soap efficiency, and extend appliance life. Water quality meets EPA standards with pH typically 7.5–8.5; the utility complies with lead and copper rules via corrosion control; occasional arsenic from groundwater is addressed via blending and oxidation; treatment includes filtration, chloramination disinfection, and fluoridation.

Geology & Source: Salt River Valley aquifer, Basin and Range Province — alluvial sediments over Proterozoic basement and Tertiary volcanics; limestone and evaporite deposits leach calcium and magnesium; Colorado River aqueduct adds further mineral load — hard supply

Other Arizona Water Reports

Maryvale

≈ 120–179 mg/L

🟠 Hard

Alhambra

≈ 180+ mg/L

🔴 Very Hard

Peoria

≈ 120–179 mg/L

🟠 Hard

Sun City

≈ 120–179 mg/L

🟠 Hard

Report an Issue

Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is Glendale's water safe to drink?

Yes. Glendale's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Glendale?

At ≈ 120–179 mg/L (Hard), Glendale's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.

How does Glendale compare to the USA average?

The USA national average is 151 mg/L. Glendale (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Glendale is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

Water Hardness

Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

TDS — Total Dissolved Solids

Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.

Measured

PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances

EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.

Modelled

Lead

Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.

Calculated

Appliance Lifespan

Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.