Continued Consider making the house ready to accept solar hot water and photovoltaic systems. Environmental Responsibility Select water-conserving toilets, showerheads, dishwashers and clothes washers. Low consumption (6 L) and dual-flush toilets use the least amount of water for flushing. Water-saving showerheads and showerheads with a built-in on/off valve use about half the water of conventional types. Water-conserving fixtures and appliances also reduce the energy needed for providing potable water and treating waste water. Consider using landscaping materials or grass species that need less watering than standard lawns. RELATED PUBLICATIONS About Your House: Accessible Housing by Design—Living Spaces, Canada Mortgage and Housing Corporation (product no. 66095) 2010 National Plumbing Code of Canada, National Research Council of Canada Canadian Electrical Code, Canadian Standards Association, product no. C22.1