As Bay Area faces prolonged drought, recycling and desalination are the only two real options

Despite being surrounded by water, Bay Area residents are routinely told during dry years to take shorter showers, let lawns brown and slow the rush of water from their taps.

But as climate change prolongs drought and challenges local water supply, regional water managers are warning that none of those actions will be enough. Many say the time has come to invest in technically feasible, though politically and environmentally complicated alternatives like purifying wastewater and sucking salt out of seawater to bolster stores.