For an urban home with water conservation, tap water is not used outdoors. Rainwater harvesting is used for landscape irrigation, and could be used for toilet flushing as well. Leaks have been reduced to zero. High efficiency toilets, faucets, and appliances have been installed. Water use is less than 35 gallons per capita per day. Less groundwater is running into the sewer. Lower total water use means that groundwater pumping is immediately diminished.
