Glendale Water Services supplies most of the city from canal water and groundwater, and like most Valley water it leaves scale, so softeners are common here. Homes in Hedgepeth Hills are City of Phoenix water customers instead, which affects which report you check. Call the number on this page to be connected with a local plumber in Glendale.

Who supplies my water in Glendale?
For most of the city it's Glendale Water Services, which runs both water and wastewater. Its supply draws on Salt River Project water from the Salt and Verde rivers, Central Arizona Project water from the Colorado River, and groundwater. One pocket differs: in Hedgepeth Hills, roughly Loop 101 to Mohawk Drive between 47th and 51st Avenues, homes are billed by and connected to the City of Phoenix. We don't have a verified hardness figure from Glendale's own report, so check the current report from whichever utility bills you, or test at the tap.
Does every line in the house need softened water?
No. Drinking and cooking water, the water heater, showers and the dishwasher benefit most. Hose bibs and landscape irrigation do not, and softening them only burns salt. Some downtown Glendale lots also receive non-potable Salt River Project irrigation water through urban irrigation; that system is separate from your household supply and has nothing to do with the softener. A plumber can loop the outdoor spigots ahead of the unit so only indoor water passes through it.
Will my older Glendale plumbing handle a softener?
Usually, yes. The city's median home was built around 1985, and many houses from that era have the main entering near the garage, which is the natural place for a softener. If there's no pre-plumbed loop, the plumber cuts into the main, adds a bypass valve and shutoffs, and runs a drain line with a proper air gap. It's a good moment to look at old shutoffs and the water heater connections too. If the job grows into replacing drain or waste piping, Glendale requires a permit for that part.
One local note
If you're not sure whether your address is a Glendale or a City of Phoenix water customer, look at who sends the bill. It decides which water quality report applies, and a quick hardness test settles the number the valve should be set to. When you call, mention whether an old softener is still in place, whether it has a bypass valve, and where the main shutoff sits. A plumber can then tell you over the phone whether the job looks like a straight swap or a new loop, and whether a drinking water tap at the kitchen sink makes sense alongside it.
Water Softeners & Filtration questions in Glendale
Should the irrigation line and hose bibs bypass the softener?
Where do I find the hardness figure for my address?
Will softened water raise the sodium in what I drink?
Where does a softener send its regeneration water?
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