district and my former city of los angeles and orange county and san diego and many countries, other ununtries. we can recycle water over and over versus taking highly treated water, using it once, sending it to a treatment plant and then trying to get it to the ocean as quickly as possible. we can use that water over and over again as they do in australia in places or in israel. and then they also have storm water capture, which is increasingly -- l.a. has grand plans to capture the water they've been shunting down their flood control districts and create green space infiltrated into groundwater. >> and you have waste water recycling in the santa clara water district. >> let me go back to lessons learned. the last drought was around 1991. we instituted about 22 different conservation programs from low flow toilets to turf replacement, et cetera. and you can see that over this period of time to where we are today there's been a 25% growth in population using the same amount of water. there hasn't been an increase of demand. you talk about purified water. currently i think the future, at least