A whole house filter would be a good investment, as well as a water softener if you don't already have one. I have both here, the water is very high in Calcium Carbonate as well as iron. My water filter usually needs to be replaced anywhere from once a month to once every 3 months, depending on the amount of sediment in the water. The softener will remove some iron, if it is very high then a separate unit should be installed to remove it. I had issues with the softener not removing the hardness anymore, had to flush the unit with "Iron Out", the iron had encapsulated the resin beads in the softener. Now I add a layer of an iron removing chemical after each bag of salt in the brine tank.