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Anthem's water is about 18 grains hard. Here's what that does to a water heater

[Author: Mike or Dan, with photo] · Local · Nov 4, 2026 · 1 min read · Updated Nov 12, 2026

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EPCOR's latest report for the Anthem Water District puts hardness at about 18 grains per gallon. That's very hard water, and a tank water heater is where you feel it first.

Where the minerals go

Heating water makes its minerals drop out as sediment, which settles at the bottom of the tank. The burner or element then heats through a layer of scale, works harder and wears out sooner.

What helps

A yearly flush, a check of the anode rod, and a softener set to EPCOR’s number rather than a "Phoenix average".

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50-Gallon Gas Water Heater

Installed, Standard Replacement · $2,222.50

The most common Arizona swap. Standard scope, transparent install, no high-pressure sales.View price breakdown

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50-Gallon Gas Water Heater

Installed, Standard Replacement · $2,222.50

The most common Arizona swap. Standard scope, transparent install, no high-pressure sales.View price breakdownStandard Water Softener Install

Installed · $2,189

Quality 48,000-grain softener installed at your existing loop — the size that suits most Phoenix homes.View price breakdown

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