: If you have well water with iron, add 3 to 5 GPG to your hardness total for every 1 PPM of iron detected . 2. Determine Total Capacity Needed
Note: If your report lists hardness in parts per million (PPM) or mg/L, divide that number by to get GPG . what size water softener should i buy
: Experts generally estimate 75 to 80 gallons per person per day . : If you have well water with iron,