If I need to be outdoors, I schedule it earlier in the day. If we do go out to a farmers market or something similar, we don't spend a lot of time outside. We also schedule walks for when the sun is going down and take water with us.
Arizona, California, and Nevada recently reached a new deal on Colorado River water sharing and there are a few interesting discussions on HN about that. Right now, we have watering schedules of 2 or 3 days a week to keep our plants from dying and these days a lot of HOAs require approval (which is unlikely) if you want to plant grass in your yard (landscape plans require approval). Last week, the Governor signed a new bill that gave Nevada the power to restrict residential water usage if we get into a crisis.