Anterograde amnesia is identified as the inability to create new memories, generally it conducts to the incapacity to recall the recent past. However; long term memories are not affected that is why we could dare to say that these people live in the past.
It is also possible that people with this condition repeat questions or sentences several times, or they are unable to recognize people they just met one hour before.
Answer: Do you mean like ways to conserve water in the kitchen? If so then don't run the dishwasher unless its completely full. And don't rinse dirty dishes