mr. berger? why shouldn't we embrace time of use races where prices increase as demand increases like we do with electricity. >> i think it depends upon the stress of the system. if your system has plenty of water, then there's no need to impose those kinds of restrictions. we do have the authority under city ordinance that at the point of drought or other kinds of stress, shortages, we do and can impose limits on consumption. >> great, thank. >> just very briefly, please. >> we do not have restrictions set. however, we do get into the drought situation, that mayor berger spoke about. >> okay. very briefly, why couldn't we're why shouldn't we. not just do you, but the rationa rationale. >> well, i think first of all, water usage is individual. so individual household, individual residents within the household, the usage pattern is different. to sort of set a standard per person, how many gallons you can use per day, that might not be practical. >> thank you. >> especially on a residential rate, i