Hardness.a ppm of what?
There are several units that can be used to measure hardness (like pounds and kilograms for weight), and some of them have more than one name just to make life complicated.
I think US water providers usually use one of these two:
ppm, also called mg/l calcium carbonate
grains per gallon.
If you look on your water provider's website for hardness, they should give a number. Tell us what that number is, and also exactly what the unit of measurement is. Fish profiles will use one of two units. When the water provider uses a different unit we can convert that number into the two used in fish keeping.
I know a number of American members get their water from a well. If the water's been checked to make sure it's safe to drink, there should be an analysis document which should contain the hardness of the water.