Sinks could be above toilets
Greywater recycling could be used
Microbial fungus on seeds could restore carbon in soil, promote plant growth, and grow with less water
Treated sewage could provide water
Hydroponic farming could provide income and nutrients for urban residents
Local, hydroponic greenhouses could provide fresh, pesticide-free, low water / energy produce
"Cooling houses" with seawater, solar energy, and cardboard could grow crops in the desert
Groundwater could be replenished
Showers could have microbubbles
Philanthropy could encourage policy options that are beneficial
Desalination could be used for water sources
National water pipelines / aqueducts could be built
California could have more water storage, water recycling, and enable aquifer recharging
Industrial effluent could be regulated for release and made into a profitable business to prevent pollution
California could regulate groundwater and create water markets
Almonds, beef, dairy, pistachios, and other water intensive agriculture could be produced in water rich areas
Water wars could be solved
Foreign companies / investors could not purchase U.S. land and water rights
Solar panels could be on water
Solar panels over canals could create renewable energy and save water
California's water laws could support small farmers during drought
Dams could harm river ecosystems and wildlife
Quinoa, millet, sorghum, fonio, barley, oat, sweet potato, other crops, etc. could better ease malnutrition, water availability, and hunger in developing countries
Fashion could be environmentally sustainable, fair trade, and long lasting
Water could be sourced from the atmosphere
Water could be recycled within homes, apartments, buildings, and factories
Hydropanels could collect drinking water from the air
Bottled water could be regulated in coming from spring fed or local groundwater sources
Pavement could be permeable
Insects could be used as animal and aquaculture feed
Algae could be made into shoes
Cover crops or conservation agriculture could be used for biodiversity, better soil, and water management
Smart faucets could conserve water
Agriculture could be grown in food computers
Grass lawns, golf courses, parks, playgrounds, and landscaping could be environmentally sustainable and pesticide-free
Parks could hold rainwater to prevent flooding
Showers could be mist
Milk could use less water to produce and be made from peas
A tree "teepee" could save water and fertilizer
Toilets could be dual-flush
Sinks could have foot pedals
Rainwater harvesting could have multiple benefits
Skyscraper or vertical farms could produce aeroponic and hydroponic crops
