The Oakland County Water Resources Commission recommend customers schedule automatic irrigation equipment to water lawns outside of the 5 a.m. to 9 a.m. and 5 p.m. to 9 p.m. high demand times.  Michigan State University recommends light, frequent irrigation applied in the early afternoon. http://www.turf.msu.edu/irrigation-practices-to-preserve-water-quality  Water your lawns or set your automatic sprinklers to operate outside of the morning and evening high demand periods to improve your water pressure and decrease costs required for water system expansion.