Drought Regulations June 8, 2021 Email Drought Regulations are effective as of May 2021: Do not overwater lawns and gardens to the point of excessive flowing runoff. Do not use drinking water to wash driveways and sidewalks. Do not wash a motor vehicle by hose unless it is equipped with a shutoff nozzle. Do not operate a fountain or other decorative water feature unless the water is recirculated. Do not irrigate lawns or landscapes on consecutive days. Do not irrigate between the hours of 10 am and 5 pm. Do not irrigate during rain or within 48 hours after measurable rainfall. Do not drain and refill a swimming pool unless needed for repair purposes. See the City of Napa’s Water Division for more information!