In any event, it appears that we'll all be forced to restrict watering our lawns from April-October to twice per week, no more than 10 minutes per station, and not during the day (between 9AM-5PM). In the winter months, only once/week. Also, no watering your lawn within 48 hours of a measureable rainfall -- which makes sense. I have a friend who is very good about reminding people, via FaceBook, to turn their sprinklers off each time it rains -- I think it's a great idea (and now it's the law!).
If you don't have a sprinkler timer with a rain delay feature, I would highly recommend purchasing one. A few years ago I replaced my timer with a much more user friendly model (click on photo attached to this article). I liked it so much I purchased one for a rental property of mine as well -- easier for the tenants to "drive" and I would know how to use it too if they ever had questions! It is much more intuitive than my old unit. The current unit allows you to delay the sprinklers coming back on for up to 72 hours -- it will come in handy during our current drought season. And if I notice that my neighbor's lawns are a lot greener than mine in the upcoming months, I'm going to be very suspicious, ha ha!