Why it's hard
The Bluegrass region sits on limestone, and water that moves through limestone picks up calcium and magnesium. Most municipal water in Jessamine, Fayette and the surrounding counties comes in moderately hard to hard. It's perfectly safe. It's just rough on equipment.
What it does
Scale on the bottom of your water heater (the rumbling sound), crusted aerators and showerheads, spots on glassware, stiff laundry, and shortened life for dishwashers, washing machines and ice makers. Over years it narrows old galvanized pipe until pressure drops.
Filter vs. softener — the honest version
A filter removes sediment, chlorine taste and odor. It does not remove hardness. A softener removes hardness and does nothing for taste. If your complaint is chlorine smell or gritty aerators, you want a filter. If it's scale and spots, you want a softener. If it's both, you want both — and we'll tell you if it isn't.
Cheap things that help
Flush the water heater yearly. Replace the anode rod when it's spent. Keep the thermostat at 120°F — hotter water drops more scale. Soak aerators and showerheads in vinegar. Set a pressure-reducing valve if your pressure is high; pressure and heat together are what wreck heaters fastest.
Written by the team at Good Help Plumbing, Nicholasville, KY. Questions about your own house? Call (859) 671-9213 — no service fee for local estimates.

