What Harrisburg water actually does to a tank
Maintenance advice is usually written for hard water, and most of this region does not have it. Your supply comes from the Water and Sewer Authority of Cabarrus County, and the question worth asking is not how much scale it leaves but how corrosive it is. Soft, lightly buffered water forms no protective film inside the tank lining, so the anode rod is doing the entire job of protecting the steel.
That inverts the standard advice. An annual flush matters less here than it would in a hard-water city, and the anode rod matters far more. A tank that has never had its anode checked at eight years old is running on whatever is left of it, and once that is gone the tank itself starts corroding.
- Anode inspection is the one job on this list that changes how long the tank lasts.
- A T&P test with a pressure reading, because a weeping relief valve is usually pressure rather than a failed valve.
- A flush, with an honest warning first: on a tank over about ten years that has never been flushed, the drain valve frequently will not reseat once opened.
What Harrisburg itself changes
The housing in Harrisburg
Harrisburg went from a crossroads to a commuter town in about two decades, and the housing reflects it: subdivision after subdivision built from the late 1990s onward, on the Charlotte side of Cabarrus County. That creates an unusual concentration. Whole streets were built within a year or two of each other, fitted with the same equipment on the same day, and they now reach the end of that equipment together. When one neighbour replaces a tank, the calls from that street tend to follow.
Where the heaters sit
Garage and utility closet almost throughout, which is the straightforward case for access and price. Attic installs turn up in the larger two-storey builds on the south side. Very little crawlspace compared with the older parts of the county.