A Portable Nutrient-recovering, Waterless, Unisex Urinal System

The Cubie

This urinal was developed by the Rich Earth Institute, Brattleboro, VT.

Cubie top view
Cubie how to fill diagram
cubie storage container
add vinegar to container

No odors!
Ball seals opening

Before filling Cubie with urine it is best to add 1 cup vinegar. This will stabilize the urine and stop ammonia odors from forming. After each use, one spray of vinegar on inside of funnel keeps stop ammonia odors from forming.

cubie collection, treatment, application & harvest

Urine can be used as fertilizer in the home landscape and/or stored in a container in the basement or outside.

In the home garden, urine can be used as fertilizer in the soil around plants immediately if the urine is from the family and the food is to be eaten by the family.

Home-Scale Treatment to destroy pathogens
Store urine in a closed container for 6 months.
The pH will up to 9.5 in a few days, which kills pathogens.

store urine for 6 months
home garden use urine as fertilizer
cubie above and below ground storage

The Cubie can be emptied into an above-ground barrel or a buried tank for storage, and pumped out as needed for use as fertilizer., or be periodically pumped out and removed by a certified hauler.

Urine as Fertilizer

The urine of one person contains about 10lbs of nitrogen, 1 pound of phosphorus, and 2 pounds of potassium, enough to fertilize 4000-5000 sq.ft. of gardens, lawns, shrubs, or trees, or grow enough wheat to make 365 loaves of bread.

Urine diversion is the most affordable solution for managing nitrogen and phosphorus to reduce water pollution. Urine diversion cost only 1/10 as much as conventional solutions such sewers and Innovative and Alternative (I/A) septic systems. Compositng toilets and urine diversion qualifies as an I/A approach in the MassDEP regulatory framework.

Cost to remove nitrogen bar chart

Create a website or blog at

%d bloggers like this: