Water Treatment System Sizing Calculator

Size whole-house water softener systems based on hardness and daily usage.

Incoming water hardness.
gpg
Number of people served.
Gallons per person per day.
gal

Results

Daily Usage-gal
Daily Grains-grains
Softener Size-kgr
References: WQA Standards; NSF/ANSI 44; ASPE Data Book Vol. 3