This includes door handles, faucet handles and sinks, and toilet flush handles. (travelinsurancereview.net)
Rainwater collection system (1,200 gallon storage capacity) installed, and toilets flushed with rainwater — over 18,000 gallons harvested annually (massaudubon.org)
The Programme allows buildings to incorporate decentralised onsite water systems for toilet flushing and irrigation. (c40.org)