COVID-19 UPDATE: The Harris Center building will be closed to visitors until further notice. Our trails and grounds remain open.

Composting Toilets

All standard (flushing) toilets at the Harris Center have been replaced with composting toilets — waterless, odorless systems that utilize aerobic bacteria to transform human waste into a rich, well-stabilized mulch. These systems require no water for flushing, thereby conserving both water and electricity.

a schematic of the Phoenix composting toilet system