Continued Water quality—Connect to a safe supply of potable water, or where this is not possible, provide appropriate home treatment to remove bacteria, chemical contaminants and unpleasant tastes or odours. Light and sound—Provide adequate natural light throughout the house and isolate internal and external noise sources. Fire safety—Provide sufficient doors to the outside and operable windows, which could serve as means of egress in the event of a fire or other danger. Energy Efficiency Building thermal performance—Minimize the building volume by using a compact design, improve the building envelope by using better insulated and more airtight assemblies, and install high-performance windows and doors. Energy for heating, cooling and ventilation— Select appropriate energy sources and provide high-efficiency equipment having the appropriate capacity. Renewable energy technologies—Incorporate wind, solar, biomass (for example, pellet stoves) and geothermal energy sources to reduce reliance on fossil fuels and grid electricity. Building orientation—Orient the building and locate the windows to capture solar gains during cold months and to enhance natural (passive) ventilation and cooling of the house during hot months. Electrical consumption and peak demand— Provide controls to avoid or minimize electrical power consumption during peak periods, such as mornings and early evenings, and select efficient domestic appliances and lights. Resource Efficiency Use renewable, recycled or reused materials where possible and avoid the use of materials that might have a damaging effect on the environment. Management of construction waste—Use materials carefully to reduce waste, reuse materials where possible and recycle waste materials. Water—Install water-efficient plumbing fixtures and appliances indoors and carefully plan landscaping and natural drainage to minimize water consumption outdoors. Consider using grey water or rainwater for irrigation. Durability and longevity—Construct a durable building structure, envelope and finishes that resist the effects of climate, use and abuse. Environmental Responsibility Manufacturing—Select appropriate materials made from environmentally responsible manufacturing processes, and avoid the use of materials that might have a damaging effect on the environment. Emissions and combustion by-products—Select high-efficiency, low-emission equipment and appliances. Wastewater and sewage—Reduce wastewater through water conservation and the provision of appropriate treatment for private wastewater treatment systems.