You should use a professional lab test because well water can contain iron or manganese, which "act" like hardness and require extra softening power.
You can usually find this for free in your city's annual water quality report (Consumer Confidence Report). how do you know what water softener to buy
Multiply your Household Size × 75 Gallons × Your Hardness Number . Purchasing and Maintaining A Water Softener You should use a professional lab test because
Choosing a water softener isn't just about picking a brand; it’s about matching a machine to your home’s "water profile." To get it right, you need to balance your daily water usage with the severity of your hard water. Purchasing and Maintaining A Water Softener Choosing a
You can buy test strips or liquid drop kits at home improvement stores like Lowe's for a quick answer. 2. Calculate Your Household's Daily Demand
A softener is sized by how many "grains" of hardness it must remove every day.