. >> rain baerls? -- barrels? >> yes. we need to have that element come into place. that's something we have funded over time. >> as an incentive program for people to put in place before? >> yes. in time for next winter so when there is some precipitation capture it and use it. >> thanks commissioner. commissioner walt? >> thank you. the first is the 10 percent goal applicable to san francisco also applicable to is it the same goal for all the users? >> yes. the 10 percent goal is system wide. it's the reduction in our overall demand. >> and the second question is what is the rational for the 10 percent. is the notion that if everybody, if we reduce it by 10 percent we'll have saved enough water if we have another year of drought or what? >> we actually are motion tion modeling -- 3 years into future. we assume right now the worst case we'll have three dry years. if we save now that will keep us in better shape for the next 4 years. if we don't, we'll have to go 20 percent or more rationing in the future. 10 percent is a little bit of a challenge, but not much. even