As Northern California enters its traditionally wet season, the city of Sacramento is reminding residents that watering rules will be adjusted starting Friday, Nov. 1. Starting on that day and continuing through Feb. 28, businesses and homes are permitted to use their sprinklers just once a week and the watering must be during the weekend. … “On average, your landscape needs about 80% less water per week in November than it does during the peak of summer in July,” the city writes. “Rainfall is often sufficient to keep lawns healthy.”