Recycled Shower Water


  1. Sustainability Problem: Excessive Household Water Use in Water Scarcity Regions
    1. Water used in showers can be up to 17% of household water use.  More water is dispensed by the shower than is needed to get clean and the water is then removed as waste through the sewage system.  The status quo leads to a) depletion of water in water scarce regions, 2) expensive water and heating costs (to heat the water) for the property owner and 3) waste water can contribute to overloaded sewage systems.
  2. Solution: OrbSys Showers
    1. OrbSys showers recycle the water used during each shower, at the end of the shower, the water from that session is discarded as regular wastewater.
    2. By recycling water in the shower, only 25% of water used during a typical shower will be consumed.
    3. Further, the cost to heat the water will be lower because the recycled water retains its heat and we don’t need to heat the 75% of the typical wastewater that is saved by the new system.
  3. Stakeholders
    1. Regional governments in water scarce regions
    2. Homeowners (although they will become more important stakeholders when the price comes down and the pricing model makes sense for less frequently used showers.  Currently price is probably around $5000.)
    3. Institutional customers that have a high volume of shower use: Spas, hotels, pools, schools, gyms, prisons, colleges, etc
  4. First Three Steps
    1. Market the benefits and business case (annual water and energy costs savings) to institutional users
    2. Invest in R&D to figure out how to lower per unit cost/price to enter the residential homeowner market.
    3. Align product with various govt grant programs for energy saving devices and provide this info to consumers (so that they can purchase the product subsidized if possible).



Greywater recycling system for bathrooms



The Sustainability Problem:

In homes alone, toilets account for about 40% of the water used in the home. No numbers were cited for businesses but we know certain businesses also have a substantial number of toilets such as in hotels and event spaces. This can be seen as a waste of freshwater since the processes for which toilets use water does not necessitate freshwater.

The Technology Solution:

The AQUS Grey Water Toilet System is a water system that captures the dirty water from your sink (a.k.a. “grey water”) and recycles this to flush your toilet. According to the Inhabitat article, it can save up to 6,000 gallons of freshwater per year.


  • Home owners
  • Communities who share the same source of freshwater
  • Water utility companies / agencies
  • Contractors and other people whose work deals with building/designing bathrooms
  • Businesses that have a lot of bathrooms (event venues, hotels, etc.)


  • Sourcing the materials
  • Selection of contractors and crew for the rennovations
  • Assessment of existing structures to determine compatibility with new system
  • Timeline planning to ensure construction/renovation time does not conflict with other important events that may need access to the bathrooms
  • Monitoring actual renovations