How to install drain kit

Install Drain Kit Video


What do I need to install the drain kit?

For some bypassing a urine bottle is a life-changing feature. The OGO™ Compost Toilet is designed to be able to install a drain kit easily and disassemble quickly if you want to go back to a bottle.

Tools Needed

For the drain kit, you’ll just need a #2 Phillips drill bit screwdriver or drill. You can use some PVC primer and glue to adhere the pieces together but we recommend keeping the inside bottom connection loose so you can easily remove the drawer if you want. The drain kit comes with a “stub” of PVC for the bottom but you’ll need additional connections to plumb from the drain kit to whatever drainage output you have.

Each Drain Kit will come with instructions but can also be downloaded here as well. Drain Kit Install PDF


What is the difference between Grey Water and Black Water?

  • Grey water by definition refers to domestic wastewater generated in households or office buildings from streams without fecal contamination, i.e., all streams except for the wastewater from toilets. Sources of greywater include sinks, showers, baths, washing machines, or dishwashers. As greywater contains fewer pathogens than blackwater, it is generally safer to handle and easier to treat and reuse onsite for toilet flushing, landscape or crop irrigation, and other non-potable uses. Greywater may still have some pathogen content from laundering soiled clothing or cleaning the anal area in the shower or bath.
  • Black Water in a sanitation context denotes wastewater from toilets, which likely contains pathogens that may spread by the fecal-oral route. Blackwater can contain feces, urine, water, and toilet paper from flush toilets. Blackwater is distinguished from greywater, which comes from sinks, baths, washing machines, and other kitchen appliances apart from toilets. Greywater results from washing food, clothing, dishes, as well as from showering or bathing.

Where can I legally dump grey water?

In most of the United States and Canada, you can generally dump grey water at any sewage drain connected to the city’s current system or designated dumpsites. Depending on your city, county, and state you’ll have different rules that govern the use of greywater systems.  For tiny houses and other homesteads building codes, zoning laws, and the public health department all come into play here, so develop a rough idea of what kind of greywater system you want to build and then have a conversation with your local city hall. Simple Greywater Systems For Your Home ( has some great ideas related to this topic.  Alternatively, you can do this under the radar, but understand you assume all risk.