When Ca had its 9 yrs of drought, I would water my lawn with the wash water. I attached a hose to the washer and sprinkler to end of the hose, moved the sprinkler for every load of laundry. I would water my rose bushes(30)with the rinse water. This was for the back yard, the front yard which was smaller, I used a traveling sprinkler twice a week. No water was allowed to run on the driveway or sidewalk. In times like this one becomes very conservative and even now 6 yrs later, I am very careful of the water I used.