Composting Toilet Calculator
Composting Toilet
Estimate composting toilet capacity, water savings, and compost output for your household
people
uses
$
Formula
Water Saved = People x Uses per Day x 1.6 gallons x 365 days
Frequently Asked Questions
How much water does a composting toilet save?
A composting toilet can save approximately 6,600 gallons of water per person per year by eliminating the need for flushing.
Is compost from a composting toilet safe to use?
When properly maintained and composted for 12 to 24 months, the resulting humus is safe for use on non-edible plants and trees.